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INVITRO INTERNATIONAL FINISHES FY 2001 WITH SMALL PROFIT FOLLOWING A DISAPPOINTING 2002

Sales jump in First Quarter 2002 Invitro International Contact: W. Richard Ulmer 17751 Sky Park

INVITRO INTERNATIONAL'S 1st HALF FY 2001 PRODUCES NET PROFIT VS. PRIOR YEAR LOSS

Website Data Base Sales To Start Soon Invitro International Contact: W. Richard Ulmer 17751 Sky

INVITRO INTERNATIONAL'S Y2K RESULTS FEATURE

ADDED GLOBAL GOVERNMENT SUPPORT Irvine, CA January 30, 2001 — InVitro International (OTC,IVRO) announced today

INVITRO INTERNATIONAL REPORTS 1ST HALF 2000 OPERATING INCOME ON INCREASED SALES

U.S. Government Agency Approvals expected to brighten future Invitro International Contact: W. Richard Ulmer 17751

INVITRO INTERNATIONAL POSTS 4TH CONSECUTIVE PROFITABLE QUARTER

Full year ’99 sales up 16%, net profit at 9.4% Invitro International Contact: W. Richard

INVITRO INTERNATIONAL POSTS 3RD CONSECUTIVE PROFITABLE QUARTER

Company also receives Corrositex endorsement from government sponsored science panel W. Richard Ulmer (800) 2-INVITRO

INVITRO INTERNATIONAL REPORTS SECOND QUARTER PROFIT

Sales & Cash Increase 6th Consecutive Quarter W. Richard Ulmer (800) 2-INVITRO INVITRO INTERNATIONAL Irvine

INVITRO INTERNATIONAL REPORTS FIRST QUARTER PROFITABLE

Sales & Cash Increase 5th Consecutive Quarter Irvine, CA February 9, 1999 — Invitro International

INVITRO INTERNATIONAL REPORTS FOURTH QUARTER PROFITABLE, BEFORE INVENTORY WRITE OFF

Sales & Cash Increase 4th Consecutive Quarter Irvine, CA January 25, 1999 — Invitro International

INVITRO SALES, CASH INCREASE AGAIN; MERGER PLANS UPDATE

W. Richard Ulmer (800) 2-INVITRO INVITRO INTERNATIONAL Irvine Bob Sullivan 760-931-2500 MAKENNA DELANEY & SULLIVAN