As a proper noun protozoa

is protozoans; eukaryotes that are primarily unicellular, existing singly or aggregating into colonies, and usually nonphotosynthetic, placed either as:.

As a noun trypanothione is

(chemistry) an unusual form of glutathione containing two molecules of glutathione joined by a spermidine (polyamine) linker, found in parasitic protozoa such as leishmania and trypanosomes.