John was a member of a university Alumni team that travelled to South America fo
ID: 164568 • Letter: J
Question
John was a member of a university Alumni team that travelled to South America for a medical mission. Unfortunately he was infected with a new strain of gramnegative organism. Five days later, he was treated with antibiotics to reduce the infection.
1. The receptors that are involved in the interaction on the immune system with this organism are?
a. NOD
b. TLR
c. C3
d. C3b
2. The cells most likely to be involved in the early phase of the infection?
a. Macrophages
b. Epithelial cells
c. B cells
d. Both A and C
Explanation / Answer
The receptors that are involved in the interaction on the immune system with this organism are TLR.
toll-like receptors are expressed by innate immune system (during early stages of infection) that recognize pathogens that activate signalling pathways to stimulate immune and inflammatory responses against pathogen.
The cells most likely to be involved in the early phase of the infection are macrophages.
early phase of infection indicates innate immune response. B-cells are part adaptive immune response. macrophages serve in both innate and adaptive immune responses.
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