Diagram 1: A pathogenic bacterium invades the bloodstream.
Shows a bacterium entering the bloodstream.
Diagram 2: A phagocytic cell encounters the pathogenic bacterium.
Shows a phagocytic cell encountering the bacterium.
Diagram 3: The phagocytic cell engulfs the bacterium.
Shows the phagocytic cell extending pseudopods around the bacterium and engulfing it to form a phagosome.
Diagram 4: The phagosome fuses with a lysosome.
Shows the phagosome fusing with a lysosome to form a phagolysosome.
Diagram 5: The bacterium is destroyed.
Shows the bacterium being destroyed by enzymes and other substances within the phagolysosome.
Diagram 6: The phagocytic cell removes the remains of the bacterium.
Shows the phagocytic cell expelling the remains of the bacterium through exocytosis.