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Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..