In addition to the A and B antigens, there is a third antigen called the Rh factor, which can be either present (+) or absent (â). In general, Rh negative blood is given to Rh-negative patients, and Rh positive blood or Rh negative blood may be given to Rh positive patients.1  The universal red cell donor has Type O negative blood type. 2  The universal plasma donor has Type AB blood type.n addition to the A and B antigens, there is a third antigen called the Rh factor, which can be either present (+) or absent (â). In general, Rh negative blood is given to Rh-negative patients, and Rh positive blood or Rh negative blood may be given to Rh positive patients.
Follow Following Unfollow Pending Disabled. A Honor Society of Nursing (STTI) answered. Symptoms of lentigo maligna melanoma are usually large, flat, irregularly-shaped tan patches on the skin. These growths usually form on sun-exposed skin on the nose, cheeks, ears, and elsewhere on the head and neck.
(See Atlas 2, Part O.). lentigo maligÂ´na (malignant lentigo) see lentigo maligna melanoma. senile lentigo (lentigo seniÂ´lis,) (solar lentigo) a small smooth round brownish patch appearing on the face, neck, or back of the hands of many older people, caused by an increase in pigment; these are entirely harmless.olar lentigo. A flat brown spot usually appearing on sun-exposed skin, such as the face or the back of the hands. They are commonly found on the skin of elderly individuals. Although they are popularly referred to as âliver spots, â they are not caused by diseases of the liver.