FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * WEST MICHAEL D   2. Issuer Name and Ticker or Trading Symbol BIOTIME INC [BTX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 381 PLANTATION STREET 3. Date of Earliest Transaction (Month/Day/Year) 03/21/2005 (Street) WORCESTER, MA 01605 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares, no par value               78,332 (1) D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Option to Purchase Common Shares

$ 1.26

03/21/2005

A

20,000

(2)

03/30/2010

Common Shares

20,000

$ 0

20,000

D

Option to Purchase Common Shares

$ 2.17

(3)

03/07/2009

Common Shares

20,000

20,000

D

Option to Purchase Common Shares

$ 1.55

(4)

03/30/2008

Common Shares

20,000

20,000

D

Option to Purchase Common Shares

$ 1

10/28/2002

10/27/2007

Common Shares

15,000

15,000

D

Option to Purchase Common Shares

$ 1

11/30/2002

10/27/2007

Common Shares

1,666

1,666

D

Option to Purchase Common Shares

$ 1

12/31/2002

10/27/2007

Common Shares

1,666

1,666

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WEST MICHAEL D 381 PLANTATION STREET WORCESTER, MA 01605	X

Signatures

/s/ Michael D. West		03/23/2005
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes 78,332 shares that Dr. West may aquire through the exercise of stock options.
(2)	5,000 options become exercisable on March 31, 2005 and the remaining 15,000 will become exercisable in 3 equal quarterly installments based upon continued service on the board of directors.
(3)	5,000 options became exercisable on March 31, 2004 and the remaining 15,000 will become exercisable in 3 equal quarterly installments based upon continued service on the board of directors.
(4)	5,000 options became exercisable on March 31, 2003 and the remaining 15,000 became exercisable in 9 equal monthly installments based upon continued service on the board of directors.

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