Which one of the following are Professional Antigen Presenting Cells?
Show Hint
- Fibroblasts
- Neutrophils
- Dendritic cells
- Epithelial cells
The Correct Option is C
Solution and Explanation
Step 1: Concept
Professional Antigen Presenting Cells (APCs) are specialized cells that express MHC-II and provide co-stimulatory signals to activate naive T-cells.
Step 2: Meaning
The three main professional APCs are Dendritic cells, Macrophages, and B-cells.
Step 3: Analysis
Dendritic cells are considered the most potent professional APCs because they are the only ones capable of activating naive T-cells and initiating a primary immune response. Fibroblasts and epithelial cells are non-professional APCs.
Step 4: Conclusion
Dendritic cells are the definitive professional APCs in the options provided. Final Answer: (C)
Top GAT B Biology Questions
- Bacillus thuringiensis CryA controls certain caterpillar pests by
- The principle driving force behind movement of water in plants is known as
Given below are two statement - one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Bacterial lipopolysaccharide (LPS) on its own does not induce memory B-cell in humans.
Reason R: LPS does not activate T-cell.
In light of the above statements, choose the most appropriate answer from the options given below:Francis & Crick proposed the scheme called Central Dogma in 1958. Which of the following processes was NOT covered in this scheme?
- Which one of the following is NOT an auxin?
Top GAT B Immunology Questions
Given below are two statement - one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Bacterial lipopolysaccharide (LPS) on its own does not induce memory B-cell in humans.
Reason R: LPS does not activate T-cell.
In light of the above statements, choose the most appropriate answer from the options given below:- The presence of antibody in infected patient's serum can be detected by
- Which one of the following statements about AIDS caused by HIV is correct?
- Choose the option that correctly matches for an immunosuppressant and its origin
- CD4 antigen is absent on
Top GAT B Questions
- Which one of the following modifications is NOT a natural N-terminal modification of proteins?
- Bacillus thuringiensis CryA controls certain caterpillar pests by
- Respiratory pathway is considered as a ________ pathway
- Many enzymes catalyze both forward and reverse reactions. Which one of the following statement is NOT correct?
- Which law of thermodynamics states that "energy of an isolated system is constant"?