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#Question id: 2013
#Unit 4. Cell Communication and Cell Signaling
A patient undergoes a high level of mast cell degranulation, dilation of blood vessels, and acute drop in blood pressure. These symptoms could be caused by which of the following?
#Question id: 2014
#Unit 4. Cell Communication and Cell Signaling
Some pathogens can undergo rapid changes resulting in antigenic variation. Which of the following is such a pathogen?
#Question id: 2012
#Unit 4. Cell Communication and Cell Signaling
The DGS-like phenotype can be produced in a specific knockout mouse for HA3, a Hox gene. HA3 is known to be involved in developmental regulation in the mouse. Which of the following would be an appropriate test for following the gene in the mouse progeny?