
The SciencesMay 1, 1966
How a Tadpole Becomes a Frog
The dramatic changes of the process are stimulated by thyroid hormone. The level of hormone is regulated by a feedback system involving the hypothalamus of the brain and the pituitary gland

How a Tadpole Becomes a Frog
The dramatic changes of the process are stimulated by thyroid hormone. The level of hormone is regulated by a feedback system involving the hypothalamus of the brain and the pituitary gland