Red: White blood cells
Yellow: Red blood cells
but what are:
Green? (grey blobs)
Blue? (filamentous objects)

Moderators: rjlittlefield, ChrisR, Chris S., Pau
No, they are crenated erythrocytes as Arturo said. You can easily see them with your own blood: add a bit of salt concentrated dissolution or just let the slide dry a bit. I do this each year with my pupils to demonstrate osmosis. Or just google for osmosis and bloodOlympusman wrote:I think the reds are clusters of platelets.