BIOQUAL Announces Changes in Registrant's Certifying Accountant.

Business Editors

ROCKVILLE, Md.--(BUSINESS WIRE)--Nov. 13, 2000

Effective November 7, 2000, BIOQUAL, Inc. (the "Company")(OTC:BIOQ, Chicago Stock Exchange:BQI) has terminated the engagement of Deloitte & Touche LLP as its independent public accountants.

On the same day, the Company retained Aronson, Fetridge & Weigle as its public accountants. The engagement of Aronson, Fetridge & Weigle was recommended by the Audit Committee of the Company's Board of Directors and approved by the Board of Directors (the "Board").

The audit reports by Deloitte & Touche LLP on the Company's financial statements for each of the last two fiscal years ended May 31, 1999 and May 31, 2000, respectively, did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles.

In connection with the audits of the Company's financial statements for each of the two fiscal years ended May 31, 1999 and May 31, 2000, respectively, and in the subsequent interim period, there have been no disagreements between the Company and Deloitte & Touche LLP on any matters of accounting principles or practices, financial statement disclosure, or auditing scope and procedures which, if not resolved to the satisfaction of Deloitte & Touche LLP would have caused it to make reference to the subject matter of the disagreement in connection with its reports on the audited financial statements.