It's time to read and vote for your favorite article in the 2013 Write-Off Contest! The four finalist's articles are featured in the May 13 newsletter and can be found through this link. Hurry! Voting ends May 18.
Literally \'in glass\': refers to experiments carried out in an artificial laboratory environment usually on micro-organisms in isolation of their natural hosts or other living organisms. Also used in digestibility estimates made in laboratory with rumen liquor. Contrast with in vivo.