The answer is the 5th option - leukotoxin
Leukotoxins are pore-forming toxins that damage the host cell membrane. Leukotoxin targets white blood cells. Leukotoxin is a protein toxin that has the ability to lyse white blood cells (leukocytes) and causes cell death. Various pyogenic bacteria such as Staphylococcus aureus and Streptococcus pyogenes produce leukotoxins. Leukotoxin is a type II toxins (toxins that damages cell membrane) that causes lysosomal mediated cell death by targeting Leukocyte function antigen-1 (LFA-1)
QUESTIONS Produced by various pyogenic bacteria such as Staphylococcus aureus and Streptococcus pyogenes, this type Il...
Case Study
#1
Clinical
history: An HIV positive male presented in clinic with
confusion and disorientation. He had a fever 38.5°C and
photophobia. His CD4 T cell count was 80/ul. An MRI and lumbar
puncture were performed. The MRI showed various small lesions
within the brain. CSF analysis indicated 32 White Blood Cells/ul
with 89% lymphocytes, and 6% monocytes, glucose of 22mg/dl, and
protein of 89mg/dl. Gram stain showed yeast and India ink negative
stain showed a thick capsule.
Image...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
immunology
practing samples and not sure if my answers correct.
1. NK cells are effective against viral infections because many virus infected cells a. are susceptible to lysis b. are susceptible to phagocytosis c. show reduced levels of MHC class I molecules d. show reduced levels of MHC class II molecules e. none of the above 2. Arachidonic acid serves as a substrate in the lipoxygenase and cyclooxygenase pathways resulting in the production of a. histamine, leukotrienes b. leukotrienes, prostaglandins...