Mammals

"Experiments on Embryonic Induction III. A Note on Inductions by Chick Primitive Streak Transplanted to the Rabbit Embryo" (1934), by Conrad Hal Waddington

"<a href="/search?text=Experiments%20on%20Embryonic%20Induction%20III.%20A%20Note%20on%20Inductions%20by%20Chick%20Primitive%20Streak%20Transplanted%20to%20the%20Rabbit%20Embryo" title="" class="lexicon-term">Experiments on Embryonic Induction III. A Note on Inductions by Chick Primitive Streak Transplanted to the Rabbit Embryo</a>" (1934) by <a href="/search?text=Conrad%20Hal%20Waddington" title="" class="lexicon-term">Conrad Hal Waddington</a>

Circulatory Changes at Birth

<a href="/search?text=Circulatory%20Changes%20at%20Birth" title="" class="lexicon-term">Circulatory Changes at Birth</a>

When placental mammals are born their circulatory systems undergo radical changes as the newborns are prepared for independent life. The lungs are engaged, becoming the primary source of fresh oxygen, replacing the placental barrier as a means for blood-gas exchange.

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