Which of the following is a RBC diluting-fluid/pipet mark pairing?

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Multiple Choice

Which of the following is a RBC diluting-fluid/pipet mark pairing?

The key idea is that counting RBCs and WBCs on a hemocytometer uses different diluting fluids and distinct pipette marks. The RBC-diluting fluid is chosen to lyse red cells so you can count the remaining cells reliably, and it is paired with a specific pipette mark that corresponds to the RBC counting method. The WBC counting uses a separate diluting fluid and its own pipette mark. Using the correct pairing ensures the dilution factor matches the cell type being counted and keeps the counting chamber results accurate. So, the best pairing is the one that links the RBC-diluting fluid with the RBC-specific pipette mark and the WBC-diluting fluid with the WBC-specific pipette mark. This alignment prevents mismatched dilutions that would skew counts. The other pairings mix these relationships and would lead to improper dilutions and unreliable results.

The key idea is that counting RBCs and WBCs on a hemocytometer uses different diluting fluids and distinct pipette marks. The RBC-diluting fluid is chosen to lyse red cells so you can count the remaining cells reliably, and it is paired with a specific pipette mark that corresponds to the RBC counting method. The WBC counting uses a separate diluting fluid and its own pipette mark. Using the correct pairing ensures the dilution factor matches the cell type being counted and keeps the counting chamber results accurate.

So, the best pairing is the one that links the RBC-diluting fluid with the RBC-specific pipette mark and the WBC-diluting fluid with the WBC-specific pipette mark. This alignment prevents mismatched dilutions that would skew counts. The other pairings mix these relationships and would lead to improper dilutions and unreliable results.

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