MICROBIOLOGICAL SCIENCES INC <MBLS>4TH QTR LOSS Oper shr loss 10 cts vs profit nine cts Oper net loss 387,000 vs profit 313,000 Revs 6,486,000 vs 5,613,000 Year Oper shr loss two cts vs profit four cts Oper net loss 96,000 vs profit 120,000 Revs 23.8 mln vs 21.3 mln Note: 1986 oper excludes extraordinary gains of 299,000 for qtr and year.