CHIRON CORP <CHIR.O> 4TH QTR APRIL 30 LOSS Shr loss 22 cts vs loss 18 cts Net loss 2,494,000 vs loss 1,608,000 Revs 3,590,000 vs 1,710,000 Year Shr loss 68 cts vs loss 53 cts Net loss 7,318,000 vs loss 4,160,000 Revs 10,503,000 vs 7,134,000