In which one of the following pair the two items mean one and the same thing?

Leucocytes — lymphocyte

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SA node — pace maker

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RBC – Lymphocytes

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WBC - Thrombocytes

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Solution

The correct option is B
SA node — pace maker

This is responsible for the origin and conduction of the heartbeat.

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Which one of the following blood cells is involved in antibody production.
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