PRR....Trading Halt bid 61/59

PRIMA BIOMED LTD

ASX MARKET RELEASE

The securities of Prima Biomed Ltd (the "Company") will be placed in
pre-open at the request of the Company, pending the release of an
announcement by the Company. Unless ASX decides otherwise, the
securities will remain in pre-open until the earlier of the
commencement of normal trading on Monday, 13 May 2002 or when the
announcement is released to the market.

Security Code: PRR
PRROB

A Walsh
ASSISTANT MANAGER COMPANIES

TRADING HALT REQUEST

I refer to our earlier conversation and confirm our request for a
temporary trading halt in relation to the company's securities
pending an announcement to the ASX.

R Revelins
DIRECTOR

ends - AAP