Requests for information and lab reagents. Readers: 17000 (0.4%) {68%} Mesgs per month/day: 1372/46 {74%} Crossposting: 2% {15%} Megs per month/day: 1.8/0.060 {71%} Sites reciving this Group: 44% Cost ratio ($US/month/rdr): 0.04