Determine how cannabinoid metabolites and their relative abundances differ among marijuana strains. Post Doctoral Fellow Name: Teagen D Quilichini Cannabinoids are synthesized and accumulate in Cannabis plant hairs called glandular trichomes, which are particularly abundant on female flower buds. Cannabinoid content and composition vary dramatically among Cannabis strains, with two general groupings distinguished: marijuana strains, defined by high THC and low CBD levels, and hemp strains containing low THC and high CBD (or low total cannabinoid content).