QuizMe

		A. Loss of integrin adhesion to extracellular matrix (ECM)
		B. Loss of cadherin-mediated adhesion between cells in the streak
		C. Repression of E-cadherin expression by the transcription factor SNAIL/SNAI1
		D. Repression of Integrin B1 expression by the transcription factor SNAIL/SNAI1
		E. A+D
		F. B+C

		A. Loss of integrin adhesion to extracellular matrix (ECM)
		B. Loss of cadherin-mediated adhesion between cells in the streak
		C. Repression of E-cadherin expression by the transcription factor SNAIL/SNAI1
		D. Repression of Integrin B1 expression by the transcription factor SNAIL/SNAI1
		E. A+D
		F. B+C

Migration of cells out of the primitive streak requires: