CRC may refer to:
The Catabolite repression control (Crc) protein participates in suppressing expression of several genes involved in utilization of carbon sources in Pseudomonas bacteria. Presence of organic acids triggers activation of Crc and in conjunction with the Hfq protein genes that metabolize a given carbon source are downregulated until another more favorable carbon source is depleted. Crc-mediated regulation impact processes such as biofilm formation, virulence and antibiotic susceptibility.
init. 1 Christian Reformed Church 2 County Road Commission 3 cyclic redundancy check 4 Chemical Rubber Company, a former American manufacturer of chemical laboratory equipment, now the publishing company http://en.wikipedia.org/wiki/CRC%20Press. n. (context science slang English) The ''CRC Handbook of Chemistry and Physics'', a frequently used reference work published by CRC Press.