The answer to this one is D
The major histocompatibility complex (MHC<span>) is a set of cell surface proteins essential for the acquired immune system to recognize foreign molecules in vertebrates, which in turn determines histocompatibility. ... The human </span>MHC<span> is also called the </span>HLA<span> (human leukocyte antigen) complex (often just the </span>HLA<span>).</span>
In 2016, a rare transit of Mercury happened, where the planet crossed the face of the sun. Mercury's transit may have yielded secrets about its thin atmosphere, assisted in the hunt for worlds around other stars, and helped NASA hone some of its instruments.
Skin, Hair, nails, and glands.
The integumentary system has the components of the
Epidermis, The epidermis is the most superficial layer of the skin that covers almost the entire body surface.
Hair.
Nails.
and the Sudoriferous Glands, Sebaceous Glands, and Ceruminous Glands.
