Definitions for "T-cells"
See T-lymphocytes.
These are a type of white blood cell (lymphocyte.) They are instrumental in the body's immune system response. The "T" stands for "thymus," the gland where the cells mature.
A type of white blood cell that is involved in rejecting foreign tissue, regulating immunity, and releasing cytokines to help control the production of antibodies to fight infection.
An object's spectral signature is the distinctive set of wavelengths of electromagnetic radiation (light) it either absorbs or emits. Every element has a unique spectral signature that can be used to identify it, like a fingerprint.