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.
EPA and DHA are both important types of omega-3, with different roles and actions in the body. Our requirements for each fat change throughout life. Therapeutic use of omega-3 involves specific ratios of EPA and DHA, at differing levels according to different conditions and health concerns. The two main omega-3s we hear most about are the long-chain fatty acids EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). These fats are found in oily fish and seafood, with small amounts of DHA found in algae. If you are seeking nutritional support for a specific health concern or condition, it is important to understand the difference between EPA and DHA and how the body absorbs and utilises them.