The Cell Concept: Principles, History, and Modern Refinements Cell theory Overview of the cell concept: core principles, 17th–19th century history, and modern molecular refinements explaining cell types, division, genetics, and exceptions like viruses.
Centriole A centriole is a small, cylindrical cellular organelle made of microtubules that helps organize cell division and forms basal bodies for cilia and flagella in many eukaryotes.
