Last Updated
：2025/11/20
yolk plug
（ plural ）
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The large edible endothermal cells surrounded by the blastopore of an amphibian gastrula during its later stages
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yolk plug
During observation under the microscope, the biologist noted that the yolk plug was retracting as gastrulation progressed.
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During observation under the microscope, the biologist noted that the yolk plug was retracting as gastrulation progressed.
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