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.
Algae based DHA has been found to be bio-equivalent to DHA in fish oil and seems to provide the same benefits without the contaminants (even in distilled fish oil and fish oil supplements for children), which are present in even organic farmed salmon. Blue green algae and spirulina supplements have been found to contain neurotoxins and hepatotoxins.