After placing the glass slides on the microscope, the correct procedure for examining the red blood cells at high resolution is:

Question

Accepted Answer

ensure you can focus at x4 magnification before moving to x10 and higher magnification levels

Answer

try different magnification lens until the cells come into focus

Answer

focus at x4 then ask a demonstrator to increase the lens magnification

Answer

focus at x4 then use the immersion oil before increasing magnification to x100

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