EMBREX INC/NC
SC 13D/A, 1999-04-12
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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	 					UNITED STATES
				SECURITIES AND EXCHANGE COMMISSION
					Washington, D.C. 20549

						SCHEDULE 13D
			Under the Securities Exchange Act of 1934
					  (Amendment No. 6)

						EMBREX, INC.
					   (Name of Issuer)

						Common Stock
				(Title of Class of Securities)

						290817105
					   (CUSIP Number)

					Benjamin L. Douglas, Esq.
				 Shartsis Friese & Ginsburg LLP
				 One Maritime Plaza, 18th Floor
					San Francisco, CA 94111
						(415) 421-6500
	  (Name, Address and Telephone Number of Person Authorized to
			  Receive Notices and Communications)

						March 29, 1999
		(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to 
report the acquisition which is the subject of this Schedule 13D, and is 
filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check 
the following box / /.

Note:  Schedules filed in paper format shall include a signed original and 
five copies of the schedule, including all exhibits.  See Rule 13d-7(b) for 
other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting 
person's initial filing on this form with respect to the subject class of 
securities, and for any subsequent amendment containing information which 
would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be 
deemed to be "filed" for the purpose of Section 18 of the Securities 
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of 
that section of the Act but shall be subject to all other provisions of the 
Act (however, see the Notes).

Potential persons who are to respond to the collection of information 
contained in this form are not required to respond unless the form displays 
a currently valid OMB control number.

SEC 1746 (10-97)

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CUSIP No. 290817105 							Page 2 of 7 Pages

- ------------------------------------------------------------------
1  NAME OF REPORTING PERSON
IRS IDENTIFICATION NO. OF ABOVE PERSON

Palo Alto Investors
IRS No.:	94-3088699
- ------------------------------------------------------------------
2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*(a)/X/ (b)/  /
- ------------------------------------------------------------------
3  SEC USE ONLY
- ------------------------------------------------------------------
4	SOURCE OF FUNDS

	AF
- ------------------------------------------------------------------
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
	TO ITEMS 2(d) or 2(e)
- ------------------------------------------------------------------
6	CITIZENSHIP OR PLACE OF ORGANIZATION

	California
- ------------------------------------------------------------------
     NUMBER OF			7	SOLE VOTING POWER
	 SHARES				-0-
   BENEFICIALLY		-----------------------------------------
	OWNED BY			8	SHARED VOTING POWER
	  EACH				1,083,000
    REPORTING			-----------------------------------------
	 PERSON			9	SOLE DISPOSITIVE POWER
	  WITH				-0-
					-----------------------------------------
					10	SHARED DISPOSITIVE POWER
						1,083,000
- ------------------------------------------------------------------
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	1,083,000
- ------------------------------------------------------------------
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
	CERTAIN SHARES*							/ /
- ------------------------------------------------------------------
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	13.0%
- ------------------------------------------------------------------
14	TYPE OF REPORTING PERSON*
	CO, IA
- ------------------------------------------------------------------

<PAGE>

CUSIP No. 290817105 							Page 3 of 7 Pages

- ------------------------------------------------------------------
1  NAME OF REPORTING PERSON
IRS IDENTIFICATION NO. OF ABOVE PERSON

William Leland Edwards
- ------------------------------------------------------------------
2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*(a)/X/ (b)/  /
- ------------------------------------------------------------------
3  SEC USE ONLY
- ------------------------------------------------------------------
4	SOURCE OF FUNDS

	AF, PF
- ------------------------------------------------------------------
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
	TO ITEMS 2(d) or 2(e)
- ------------------------------------------------------------------
6	CITIZENSHIP OR PLACE OF ORGANIZATION

	California
- ------------------------------------------------------------------
     NUMBER OF			7	SOLE VOTING POWER
	 SHARES				32,400
   BENEFICIALLY		-----------------------------------------
	OWNED BY			8	SHARED VOTING POWER
	  EACH				1,083,000
    REPORTING			-----------------------------------------
	 PERSON			9	SOLE DISPOSITIVE POWER
	  WITH				32,400
					-----------------------------------------
					10	SHARED DISPOSITIVE POWER
						1,083,000
- ------------------------------------------------------------------
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	1,115,400
- ------------------------------------------------------------------
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
	CERTAIN SHARES*							/ /
- ------------------------------------------------------------------
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	13.4%
- ------------------------------------------------------------------
14	TYPE OF REPORTING PERSON*
	IN
- ------------------------------------------------------------------

<PAGE>

CUSIP No. 290817105							Page 4 of 7 Pages

ITEM 1.	SECURITY AND ISSUER.

This statement relates to shares of Common Stock (the "Stock") of Embrex, 
Inc. (the "Issuer"). The principal executive office of the Issuer is 
located at 1035 Swabia Court, Durham, NC  27703.

ITEM 2.	IDENTITY AND BACKGROUND.

The persons filing this statement and the persons enumerated in Instruction 
C of Schedule 13D and, where applicable, their respective places of 
organization, general partners, directors, executive officers and 
controlling persons, and the information regarding them, are as follows:

	(a)	The names of the persons filing this statement are Palo Alto 
Investors ("PAI") and William Leland Edwards ("Edwards") (collectively, the 
"Filers").

	(b)	The business address of the Filers is located at 470 University 
Avenue, Palo Alto, CA 94301.

	(c)	PAI is an investment adviser registered under the Investment 
Advisers Act of 1940.  Edwards is the President and principal shareholder 
of PAI.

(d)	During the last five years, neither of the Filers has been convicted 
in a criminal proceeding (excluding traffic violations or similar 
misdemeanors).

(e)	During the last five years, neither of the Filers was a party to a 
civil proceeding of a judicial or administrative body of competent 
jurisdiction and as a result of such proceeding was or is subject to a 
judgment, decree or final order enjoining future violations of, or 
prohibiting or mandating activities subject to, federal or state securities 
laws or finding any violation with respect to such laws.

	(f)	PAI is a California corporation.  Edwards is a citizen of the 
United States of America.

ITEM 3.	SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

The source and amount of funds used in purchasing the Stock were as 
follows:

Purchaser		Source of Funds			Amount

PAI			Funds Under Management*	$6,746,437.89
Edwards		Working Capital			$  204,867.00

* Includes funds of PAI's advisory clients invested in the Stock.


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CUSIP No. 290817105							Page 5 of 7 Pages

ITEM 4.	PURPOSE OF TRANSACTION.

PAI's principal purpose for acquiring the Stock is equity investment.  
Because of the current market price of the Stock, PAI, on behalf of an 
advisory client of which PAI is the general partner (the "Client"), has 
asked the Issuer to include in its proxy a shareholder proposal (the 
"Proposal") recommending that the Issuer's Board of Directors retain a 
nationally recognized investment banking firm to recommend and evaluate the 
Issuer's options to increase shareholder value, including, without 
limitation, an issuer tender offer.

On March 29, 1999, PAI, on behalf of the Client, caused the nominee of the 
record holder of the Stock beneficially owned by the Client to submit 
letters to the Issuer that, among other things: (a) informed the Issuer 
that Edwards would attend the Issuer's annual shareholders meeting to be 
held in May 1999 to present the Proposal and a proposed amendment to the 
Issuer's By-laws, a copy of which is attached hereto as Exhibit A (the 
"Proposed Amendment"); (b) informed the Issuer that the Client intends to 
deliver a proxy statement and form of proxy to holders of at least the 
minimum number of the Issuer's voting shares required to approve the 
Proposed Amendment; and (c) requested, pursuant to North Carolina law, that 
the Issuer make available certain records of the Issuer for the purpose of 
the Client's communication with the Issuer's other shareholders to solicit 
(i) support for the Proposal and (ii) proxies to approve the Proposed 
Amendment.

ITEM 5.	INTEREST IN SECURITIES OF THE ISSUER.

Each Filer's beneficial ownership of the Stock at the date hereof is 
reflected on the cover sheet for that Filer.

The Filers have effected the following transactions in the Stock since 
March 17, 1999:


		Purchase			Number	Price		Type of
Name		or Sale	Date		of Shares	Per Share($)	Transaction

PAI			P	3/18/99	     500	  4.99		Open market purchase
PAI			P	3/18/99	   2,000	  4.95		Open market purchase
PAI			P	3/18/99	   3,000	  4.94		Open market purchase
PAI			P	3/18/99	   2,500	  4.94		Open market purchase



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CUSIP No. 290817105							Page 6 of 7 Pages


PAI is a registered investment adviser whose clients have the right to 
receive or the power to direct the receipt of dividends from, or the 
proceeds from the sale of, the Stock.  No individual client's holdings of 
the Stock are more than 5% of the class.

ITEM. 6.	CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH 
RESPECT TO SECURITIES OF THE ISSUER.

PAI is a registered investment adviser whose clients have the right to 
receive or the power to direct the receipt of dividends from, or the 
proceeds from the sale of, the various securities in which their assets are 
invested, including the Stock.

ITEM 7.	MATERIAL TO BE FILED AS EXHIBITS.

A.  Proposed Amendment to the Issuer's By-laws.

SIGNATURES

	After reasonable inquiry and to the best of my knowledge, I certify 
that the information set forth in this statement is true, complete and 
correct.

DATED:	April 6, 1999

Palo Alto Investors


By:	/s/ William L. Edwards
	William L. Edwards, President



/s/ William L. Edwards
William L. Edwards


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CUSIP No. 290817105							Page 7 of 7 Pages

												Exhibit A


PROPOSED AMENDMENT TO ARTICLE III, SECTION 4
OF THE BYLAWS OF EMBREX, INC.


	Amend Article III, Section 4 of the By-laws of Embrex, Inc. by adding 
to the end thereof the following paragraph:

	In addition, and notwithstanding any other provision of these by-laws 
to the contrary, the following provisions shall govern special meetings of 
shareholders of the Corporation.  A special meeting of the shareholders of 
the Corporation shall be called by the Secretary upon the written request 
of shareholders who together own ten percent (10%) or more of the 
outstanding shares of voting stock of the Corporation.  The written request 
shall state the purpose and date of the meeting.  The notice of the special 
meeting shall be mailed by the Secretary within 30 days following the 
Corporation's receipt of such request.  If the Secretary fails to call the 
special meeting and mail the notice as required by the preceding sentence, 
a person designated by the shareholders requesting the meeting shall have 
the power and authority to call the special meeting and mail such notice.  
A special meeting called at the request of shareholders shall be presided 
over by a person designated by the shareholders calling the meeting.  The 
record date for determining shareholders entitled to request a special 
meeting is the date the first shareholder signs the request.  The record 
date for the special meeting shall be the record date set forth in the 
request, so long as such date complies with North Carolina law.  Special 
meetings of shareholders shall be held at the location set forth in the 
request.  For purposes of this Section 4, "shareholder" includes a 
beneficial owner whose shares are held in voting trust or by a nominee and 
whose beneficial ownership is certified to the Corporation by that voting 
trust or nominee.  Without the approval of the shareholders, the board of 
directors may not further amend or repeal this Section 4 of the By-laws 
governing special meetings or adopt any new by-law provision that is 
inconsistent with or would render ineffective the provisions of this 
Section 4 pertaining to special meetings of shareholders.



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