Like Y-DNA STRs, autosomal STRs are counts of repeated genetic code. As autosomal DNA recombines each generation, the number of markers shared with a specific ancestor is reduced by half each generation.
Heroin acts as a lipid soluble âprodrugâ within the brain, meaning that heroin itself is inactive but it is metabolized into an active form within the body. After crossing the blood-brain barrier, heroin is metabolized into morphine, which actively binds to opiate receptors in the brain producing the high.
Diamorphine hydrochloride (heroin). Diamorphine hydrochloride is an opiate drug with extremely powerful pain-killing properties. It a chemical derivative of morphine, with increased solubility and more complete and rapid penetration into the brain than morphine.