tintinnid ciliates - linear for coloring, tintinnid - unicellular eukaryotic ciliates. plankton under a micros

anatomy animal biological biology book cell ciliate ciliates coloring cytoskeleton doodle element eukaryotic for graphic illustration infusoria isolated laboratory linear micro microbiology microorganism micros microscope microscopic microscopy natural nature organism pattern plankton science scientific sketch sketching small solid structure symbol tintinnid tintinnida unicellular vector zoology