Type of GAG found in mast cell granules is:Select one:a. Chondroitin sulphateb. Heparinc. Keratan sulphated. Dermatan sulphate

Break Down the Problem

1. Identify the types of glycosaminoglycans (GAGs) listed in the options.
2. Determine which GAG is predominantly found in mast cell granules.

Relevant Concepts

• Glycosaminoglycans (GAGs) are long unbranched polysaccharides that play key roles in various biological functions.
• Mast cells are immune cells that release various substances, including heparin and histamine.

Analysis and Detail

1. Chondroitin sulfate: Commonly found in cartilage, it is not primarily associated with mast cells.
2. Heparin: This is an anticoagulant that is well-known for being found in mast cell granules.
3. Keratan sulfate: Typically found in the cornea and cartilage, not related to mast cells.
4. Dermatan sulfate: Generally appears in skin and blood vessels, not associated with mast cells.

Since heparin is the GAG that is most significantly associated with mast cells, we conclude that it is the correct answer.

Verify and Summarize

Upon analysis, the other options do not pertain to mast cell granules, confirming that heparin is indeed a key component.

Final Answer

b. Heparin