BIS 104 PQ 22 Spring 2009

BIS 104 PQ 22 Spring 2009 - concluded from these results?...

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BIS 104 PQ 22 Spring 2010 22. When PECAM-1 positive / ephrinB2-negatvie undifferentiated ECs were treated with 2.5 pM pure VEGF protein, approximately 50% of the ECs responded by differentiating (they began expressing ephrinB2). This treatment with VEGF did not lead to any net change in the total number of ECs. What may be
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Unformatted text preview: concluded from these results? When undifferentiated ECs were treated with higher concentrations of VEGF (25 and 250 pM) under the same conditions as above, there was no additional increase in the number of ephrinB2 positive cells beyond that achieved with 2.5 pM VEGF. What is a plausible explanation for this result?...
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