â¢ spaces in between cells allow fluid from vessels in the dermis to. nourish the cells (epidermis is avascular!) â¢ Langerhans cells (involved in the immune system) found here. stratum germinativum (basalis) â¢ contains stem cells from which new keratinocytes arise by mitosis. a) these cells are relatively small, cuboidal to low columnar. b) look for mitotic cells with basophilic appearance. â¢ melanocytes are dendritic cells that synthesize melanin.
Fish oil EPA and DHA are both polyunsaturated fatty acids, and each unsaturated bond (double bond) can possibly be oxidized; this would convert the lipid itself into an oxidant capable of producting other oxidants and is a phenomena common to any unsaturated fatty acid including arachidonic acid.
DHA is a long chain (22 carbon) omega-3 fatty acid. It is found mostly in fatty fish, in small amounts in eggs, and in very small amounts in seaweed. It is a major component of the gray matter of the brain, and also found in the retina, testis, sperm, and cell membranes. The body can convert EPA into DHA.