The actinophryids are an order of heliozoa, a polyphyletic array of amoebae. They are common in fresh water and occasionally found in marine and soil habitats. Actinophryids are unicellular and roughl
Actinophrys sol
Cross-section of the double spiral microtubule structure in an axopod
Actinophrys undergoing multiple plasmotomy
Actinophrys and Paramecium
An amoeba or ameba, often called an amoeboid, is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting pseudopods. Amoebae do not form a sin
Actinophryid
…The actinophryids are an order of heliozoa, a polyphyletic array of amoebae. They are common in fresh water and occasionally found in marine and soil habitats. Actinophryids are unicellular and roughly spherical in shape, with…
Clockwise from top right: Amoeba proteus, Actinophrys sol, Acanthamoeba sp., Nuclearia thermophila., Euglypha acanthophora, neutrophil ingesting bacteria.
Amoeba phagocytosis of a bacterium
Foraminifera have reticulose (net-like) pseudopods, and many species are visible with the naked eye.
Trophozoites of the pathogenic Entamoeba histolytica with ingested red blood cells