amoeba proteus and infusoria colorful seamless background

abstract ameba amoeba anatomy animal art artistic background bacteria bio biologic biological biology cell circle cytoplasm design diseases drawing drawn ectoplasm education graphic hand illustration infusoria life medical medicine membrane micro microbe microbiology microorganism microscopic nucleus organism pattern pen protista protistm protozoa protozoan pseudopod pseudopodia school science scientific structure study unicellular vacuole vector zoology