1A. Image of an amoeba shortly after transplant of a labeled nucleus (arrow). 1B. Autoradiograph image of the amoeba shown in 1A. Radioactivity appears in black, and is confined to the nucleus ...

This amoeba, a single-celled organism, acquires energy by engulfing nutrients in the form of a yeast cell (red). Through a process called phagocytosis, the amoeba encloses the yeast cell with its ...

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