Pertaining to processes within a living body.

Occurring during the life of an organism.

Relating to studies conducted on live subjects.

Involving biological functions in active organisms.

Characterizing measurements taken from living tissues or cells.

**Intravital microscopy:** Imaging techniques for live cells or tissues.

**Intravital staining:** Coloring living tissue for visualization purposes.

**Intravital imaging:** Capturing real-time images of biological processes in vivo.

**Intravital studies:** Research conducted on living organisms, typically animals.

**Intravital labeling:** Tagging molecules within a living system for tracking.