Examlex
In economics the t cost of making a choice is the value of what must be given up.
Mesonephros
A temporary kidney structure found during the embryonic development of mammals, later replaced by the permanent kidneys.
Allantois
An extra-embryonic membrane in birds and reptiles, involved in gas exchange and waste removal during embryonic development.
Neural Groove
A shallow groove on the surface of the neural plate during embryonic development that eventually deepens to form the neural tube.
Neural Tube
The embryonic precursor to the central nervous system, which later develops into the brain and spinal cord.
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