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What accounts for the lighter appearance of the pro-amnoin?

In: Human Anatomy

[Edit]

Answer

Vascularization, the presence of blood vessels, makes the amnion red. Pro-amnion is not fully developed.

First answer by Ilantoren. Last edit by Ilantoren. Contributor trust: 193 [recommend contributor]. Question popularity: 10 [recommend question]

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Answers.com > Wiki Answers > Categories > Science > Biology > Human Anatomy > What accounts for the lighter appearance of the pro-amnoin?