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Black silhouette of microscopic unicellular organisms: protozoa Paramecium caudatum, Amoeba proteus, Royalty Free Stock Photo
Set of black silhouettes of microscopic protozoa unicellular organisms: Paramecium caudatum, Amoeba proteus, Royalty Free Stock Photo
   
   
   
   
   
Black silhouette of microscopic unicellular organisms: protozoa Paramecium caudatum, Amoeba proteus,
   
   
   
   
   
   
   
Black silhouette of microscopic unicellular organisms: protozoa Paramecium caudatum, Amoeba proteus, Chlamydomonas, Euglena viridis and bacteria under magnifying glass

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