Examlex
Helper T cells do not ________.
Ectoderm
The outermost layer of cells in the embryo of a multicellular organism, from which the nervous system, skin, and various sensory organs develop.
Hydrostatic Skeleton
A type of skeleton found in some invertebrates in which contracting muscles push against a tube of fluid.
Asexual Reproduction
The process by which an organism creates a genetically identical copy of itself without the involvement of another organism.
Choanoflagellates
A group of free-living unicellular and colonial flagellate eukaryotes considered to be the closest living relatives of the animals.
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