SIGMA RESEARCH ONC <SIGR> 2ND QTR DEC 31 LOSS Shr loss 27 cts vs profit one ct Net loss 532,376 vs profit 15,584 Revs 1,899,719 vs 2,432,256 Six mths Shr loss 78 cts vs profit two cts Net loss 1,521,002 vs profit 30,145 Revs 3,235,907 vs 5,276,119 Note: year ago net includes gain from tax carryforwards of 5,000 dlrs in quarter and 9,000 dlrs in year.