Cell theory and its modern form
Cell theory and overview · Biology
Animal cell explorer
Interactive 3DPeek inside an animal cell — pick an organelle to highlight it and learn its job.
Controls
Drag the sliders or type a value — the simulation updates live.
Study notes
Example: When you get a cut, the wound heals because skin cells near the cut divide (mitosis) to make new cells — exactly as Virchow said, new cells come only from pre-existing cells. No cell appears from nothing.