Researchers investigating MS have analysed various tissue samples from patients - VCE - SSCE Biology - Question 24 - 2017 - Paper 1
Question 24
Researchers investigating MS have analysed various tissue samples from patients.
In these samples they would expect to find
A. an abundance of allergens in nerve cel... show full transcript
Worked Solution & Example Answer:Researchers investigating MS have analysed various tissue samples from patients - VCE - SSCE Biology - Question 24 - 2017 - Paper 1
Step 1
A. an abundance of allergens in nerve cells.
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Answer
Tissue samples in MS typically do not show allergens in nerve cells. Allergens are not a recognized feature in Multiple Sclerosis pathology.
Step 2
B. cancer cells in MS plaques in brain tissue.
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There is no significant evidence suggesting that cancer cells are present in MS plaques. MS is characterized by inflammatory demyelination rather than cancerous growths.
Step 3
C. increased numbers of T helper cells in spinal fluid.
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In MS, there is often an increase in T helper cells (particularly activated T cells) in the cerebrospinal fluid. This is due to the immune response to the neuroinflammation associated with the condition.
Step 4
D. an absence of T cytotoxic cells in the spinal cord and brain.
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In fact, T cytotoxic cells may be present in MS lesions. Their role is associated with the destruction of myelin, indicating that there would not be an absence of these cells.
