Which of the following cells has a high affinity receptor for IgE?
A.
Dendritic cell
B.
Mast cells
C.
Eosinophils
D.
Basophils
Answer: Option D
Explanation:
Basophils are non-phagocytic cells, which releases substance that causes an allergic responses. These substances are histamine, prostaglandins, serotonins etc. It has a high affinity for IgE.
Name the macrophages which are associated central nervous system.
A.
Alveolar macrophages
B.
Kupffer cell
C.
Mesangial
D.
Microglial cells
Answer: Option D
Explanation:
Macrophages are phagocytic in nature and is derived from blood monocytes. They have a variety of forms like kupffer cells in the liver, mesangial in the kidney, and alveolar macrophages in the lung.
Name the molecule which constitutively expressed on the dendritic cell?
A.
Class I MHC
B.
Class II MHC
C.
APC
D.
Antigen
Answer: Option B
Explanation:
Dendritic cells arise from both myeloid and lymphoid lineages. Inspite of their differences, they all express high level of class II MHC and act as an antigen presenting cells
Name the dendritic cell, which does not function as antigen presenting cell?
A.
Follicular dendritic cell
B.
Langerhans cell
C.
Myeloid dendritic cell
D.
Lymphoid dendritic cell
Answer: Option A
Explanation:
Follicular dendritic cell has a different function than antigen presenting cell as they do not arise from the bone marrow and also do not express MHC II molecules on their surface.