Examlex
Diagnosis of active TB requires which of the following criteria?
Mesoderm
Middle tissue layer of a three-layered animal embryo.
Ectoderm
Outermost tissue layer of an animal embryo.
Implantation
The process by which a fertilized egg attaches itself to the lining of the uterus, marking the beginning of pregnancy.
Zygote
A fertilized egg cell that results from the union of a female gamete (egg) and a male gamete (sperm), marking the beginning of embryonic development.
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