What is this thing found in a cheek swab?
Basic school microscope, 400x amplification. Just a fiber from the wooden tongue depressor?
Basic school microscope, 400x amplification. Just a fiber from the wooden tongue depressor?
Basic school microscope, 400x amplification. Just a fiber from the wooden tongue depressor?
Basic school microscope, 400x amplification. Just a fiber from the wooden tongue depressor?