RISC can refer to many things. There are a few bussinesses with that anagram. RISC can also stand for Reduced Instruction Set Computing. It could also stand for "RNA-induced Silencing Complex."

V. A. Erdmann has written:

'Non coding RNAs in plants' -- subject(s): Genetics, Non-coding RNA, Untranslated RNA, Plant Gene Expression Regulation, Plant genetic regulation, Plant RNA, Gene silencing, Gene Silencing

Certain small RNA molecules fold into loops. The Dicer enzyme cuts them into

microRNA (miRNA). The strands then separate. An miRNA piece attaches to a cluster

of proteins to form a silencing complex. The silencing complex binds to and destroys

an mRNA molecule that contains a base sequence complementary to the miRNA. In

this way, it blocks gene expression.

RNA has been found in a panoply of human body fluids: blood, urine, have since discovered this type of RNA silencing in many orginisms.