Hemolytic disease of the newborn (HDN) is a disorder in which the red blood cells of a fetus are attacked and destroyed by maternal antibodies while in utero. This can result in
anemia, heart failure, and can be fatal in extreme circumstances.
HDN is only a concern when the mother's blood type is Rh, and the fetus is the second
child to be Rht. This makes it possible for the mother to have anti-Rht-antigens that will
diffuse across the placenta into the fetal blood stream.
1. Describe the role of macrophages in non-specific defense and specific defense the first
time the mother is exposed to Rhantigens. (1 mark)

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )

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