Question

Why are WBCs observed under oil immersion lens ?​

Answer 1

Answer:

This area of the smear is usually scanned at low power to identify low numbers of potentially diagnostic cells (e.g. blasts in a leukemia), infectious agents (e.g. trypanosomes, microfilaria), and certain RBC changes (hypochromasia, agglutinates).

Explanation:

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Answer 2

Answer:

This area of the smear is usually scanned at low power to identify low numbers of potentially diagnostic cells (e.g. blasts in leukemia), infectious agents (e.g. trypanosomes, microfilaria), and certain RBC changes (hypochromasia, agglutinates).