Sample from here:

 

Amoeba. The movie below shows it crawling on a grain of sand.

20170814 Zeiss AxioObserver Z1 with 63X plan apo lens. Used color AxioCam but only showing green channel at 50% original spatial scale and fft256-0 filtering, gamma, and 64 gray levels for gif.

Continuation of movie here.

 

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