CpG: In genetics, a site where cytosine (C) lies next to guanine (G) in the DNA sequence. (The p indicates that C and G are connected by a phosphodiester bond.) Methylation of DNA occurs at any CpG site.
- CpG island
CpG island: In molecular genetics, a short region of DNA rich in CpG sites, often located near the promoters of genes. Methylation of the CpG sites influences the activity of nearby genes and is critical to the regulation of gene expression.
- CPM machine
CPM machine: A machine used to help rehabilitate a limb (an arm or leg). The continuous passive motion (CPM) machine is attached to, for example, a knee that has had surgery. The CPM machine then constantly moves the knee through a range of motion for a period of time while the patient relaxes.
Crabs: Slang for pubic lice, parasitic insects that can infest in the genital area of humans. Pubic lice are usually spread through sexual contact. Rarely, infestation can be spread through contact with an infested person’s bed linens, towels, or clothes. The key symptom of pubic lice is itching in the genital area. Lice eggs (nits) […]
CRAC1: Colorectal adenoma and carcinoma 1. Also called hereditary mixed polyposis syndrome. See: Hereditary mixed polyposis syndrome.
- Crack (drug)
The street name given to cocaine that has been processed from cocaine hydrochloride to a ready-to-use free base for smoking. Rather than requiring the more volatile method of processing cocaine using ether, crack cocaine is processed with ammonia or sodium bicarbonate (baking soda) and water and heated to remove the hydrochloride, thus producing a form […]