Flow Cytometry: A Key Technology in Immunology Laboratories

Flow cytometry is one of the newest technological innovations in the 'immunology' laboratory.

Explanation: Flow cytometry is a powerful technique used in immunology to analyze and sort cells based on their physical and chemical properties. It's widely employed in areas like:

• Immune cell profiling: Identifying and quantifying different immune cell types.
• Immunophenotyping: Characterizing the surface markers and intracellular proteins of immune cells.
• Cell sorting: Isolating specific cell populations for further study.

Therefore, the correct answer is B immunology.