Cancer cell division. Immunofluorescent light micrograph of a cancer cell during the prometaphase of cell division (mitosis). During this phase, the nuclear envelope breaks and the microtubules (red) can attach themselves to DNA containing chromosomes (greenyellow). Actin microfilaments (blue) make up the cells cytoskeleton. Immunofluorescence uses antibodies to attach fluorescent dyes to specific cell tissues.
