Examlex
The reappearance of previously effective behavior during extinction is called ____________.
Blastocyst
A stage in early embryonic development that occurs approximately 5 to 6 days after fertilization, consisting of a sphere of cells surrounding a fluid-filled cavity.
Placenta
An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing fetus via the umbilical cord.
Mesoderm
Mesoderm is the middle layer of an embryo in early development, giving rise to muscles, bones, the cardiovascular system, and other internal organs.
Diethylstilbestrol
A synthetic estrogen that was prescribed between the 1940s and 1970s to prevent miscarriage, later found to cause a range of health issues.
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