A patient presents with a painful skin abscess containing thick, yellow-white pus. Microscopic examination shows large numbers of dead leukocytes that were recruited to the site to phagocytize bacteria. Which leukocyte would be most abundant in this material?

This adaptive immune cell needs to interact with MHC-II to work correctly?

A patient develops a Gram-negative bacterial infection. Macrophages recognize lipopolysaccharide (LPS) on the bacterial surface and rapidly begin producing antimicrobial cytokines. Which mechanism initiated this innate immune response?

An organism which is capable of producing catalase can be said to:

Interpret the gram stain:

Which media would routinely be inoculated for a cerebrospinal fluid culture? A.  SBA and CHOC B.  SBA, CHOC and Thio broth C.  SBA, CHOC and MAC D.  SBA, CHOC, MAC and Thio broth

Which would be true when comparing the structure of gram positive organisms to gram negative?

It is a very busy shift in the Microbiology lab and the specimens are piling up, waiting to be processed. Which specimen type would have first priority (to be set up first) over the others? 

What is the correct order of reagents when performing a gram stain? A: Safranin, Aceton-Alcohol, Iodine, Crystal Violet B: Crystal Violet, Acetone-Alcohol, Safranin, Iodine C: Iodine, Crystal Violet, Acetone-Alcohol, Safranin D: Crystal Violet, Iodine, Acetone-Alcohol, Safranin

This commonly employed method identifies bacterial colonies using latex beads coated with antibodies to antigens of specific bacteria. One example is the S. aureus test demonstrated in student lab this week.