ClipArt ETC
A particle of human blood as it appears when transparent and floating. 2. the same, seen as illuminated. 3. the same, one half illuminated. 4. a particle of frog's blood floating. 5. the same, seen edgewise. All these objects are magnified 500 diameters.

Blood Particle

A particle of human blood as it appears when transparent and floating. 2. the same, seen as illuminated.…