Multiple Choice
Implantation
A) is accomplished as the trophoblastic cells break down the endometrial tissue.
B) occurs during the secretory, or progestational, phase of the menstrual cycle.
C) occurs within 24 hours after ovulation.
D) both (a) and (b) above.
E) all of these answers.
Correct Answer:

Verified
Correct Answer:
Verified
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