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.
Introduction. Lentigo maligna is a specific type of melanoma in situ that occurs around hair follicles on the sun-damaged skin of the head and neck. Lentigo maligna melanoma is diagnosed when the melanoma cells have invaded into the dermis.It is the second most common form of melanoma.This chapter is set out as follows:entigo maligna is a specific type of melanoma in situ that occurs around hair follicles on the sun-damaged skin of the head and neck. Lentigo maligna melanoma is diagnosed when the melanoma cells have invaded into the dermis. It is the second most common form of melanoma. This chapter is set out as follows: