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After how many days does the morula enter the uterus?

In the uterus, the pre-embryo is bathed in what?

Uterine fluid is rich in what?

What does the Syncytial trophoblast secrete?

What happens when, during implantation, the blastocyst, contact the endometrium via trophoblast?

What are the intact cells closest to the inner cell mass called?

What does hyaluronidase do?

What is the benefit of having the maternal capillaries and uterine glands erode?

When is implantation complete?

What causes an ectopic pregnancy?