I confess that I didnât know the geological conventions for abbreviating time until I started teaching the geology writing class and looked them up. (Thatâs despite having published a paper on argon-argon geochronology.
Iontophoresis is a physical process in which ions flow diffusively in a medium driven by an applied electric field.ontophoresis of acetylcholine is used in research as a way to test the health of the endothelium by stimulating endothelium-dependent generation of nitric oxide and subsequent microvascular vasodilation.
Non-professional phagocytes are more limited than professional phagocytes in the type of particles they can take up. This is due to their lack of efficient phagocytic receptors, in particular opsonins âwhich are antibodies and complement attached to invaders by the immune system.he first type is the oxygen-dependent production of a superoxide, which is an oxygen-rich bacteria-killing substance. The superoxide is converted to hydrogen peroxide and singlet oxygen by an enzyme called superoxide dismutase.