Science / Biology / Morula: The solid-ball stage of the pre-emplantation embryo.
Science / Biology / Blastocyst: The developmental stage of the fertilized ovum by the time it is ready to implant; formed from the morula and consists of an inner cell mass, an internal cavity, and an outer layer of cells (the trop MORE
Science / Biology / Tubal Pregnancy: Occurs when the morula remains in the oviduct and does not descend into the uterus. MORE
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