Navidea Biopharmaceuticals (NAVB) S-8 Registration of securities for employees

Exhibit 24

POWER OF ATTORNEY

Each of the undersigned officers and directors of Neoprobe Corporation, a Delaware corporation (the "Company"), hereby appoints Brent L. Larson and William J. Kelly, Jr., Esq. as his or her true and lawful attorneys-in-fact, or either of them, with power to act without the others, as his or her true and lawful attorney-in-fact, in his or her name and on his or her behalf, and in any and all capacities stated below, to sign and to cause to be filed with the Securities and Exchange Commission (the "Commission"), the Company’s Registration Statement on Form S-8 (the "Registration Statement") to register under the Securities Act of 1933, as amended, 3,000,000 shares of Common Stock, $.001 par value, of the Company to be sold and distributed by the C ompany pursuant to the Company's 2002 Stock Incentive Plan (the "Plan") and such other number of shares as may be issued under any anti-dilution provision of the Plan, and any and all amendments, including post-effective amendments, to the Registration Statement, hereby granting unto such attorneys-in-fact, and to each of them, full power and authority to do and perform in the name of and on behalf of the undersigned, in any and all such capacities, every act and thing whatsoever necessary to be done in and about the premises as fully as the undersigned could or might do in person, hereby granting to each such attorney-in-fact full power of substitution and revocation, and hereby ratifying all that any such attorney-in-fact or his substitute may do by virtue hereof.

IN WITNESS WHEREOF, the undersigned have signed these presents this 9th day of September, 2004.

Signature	Title
/s/ David C. Bupp	President, Chief Executive Officer
David C. Bupp	and Director
	(principal executive officer)
/s/ Brent L. Larson	Vice President, Finance and Chief
Brent L. Larson	Financial Officer
	(principal financial officer and principal
	accounting officer)
/s/ Julius R. Krevans	Chairman of the Board of Directors
Julius R. Krevans
	Director
Carl J. Aschinger, Jr.
/s/ Reuven Avital	Director
Reuven Avital
/s/ Kirby I. Bland	Director
Kirby I. Bland
/s/ Nancy E. Katz	Director
Nancy E. Katz
	Director
Fred B. Miller
	Director
Frank Whitley, Jr.