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.
Lentigo maligna (also known as Lentiginous melanoma on sun-damaged skin) is a melanoma in situ that consists of malignant cells but does not show invasive growth.Lentigo maligna is not the same as lentigo maligna melanoma, and should be discussed separately.It typically progresses very slowly and can remain in a non-invasive form for years.t is normally found in the elderly (peak incidence in the 9th decade), on skin areas with high levels of sun exposure like the face and forearms. Some authors do not consider lentigo maligna to be a melanoma.