Office visit for the evaluation and management of a new patient when the presenting problem is self-limited or minor; typically 10-minute consult

Which of the following is an example of primary lymphoid tissues?

A) Spleen B) Thalamus C) Thymus D) Tonsils

The most effective method for destruction of all types of microorganisms is

A) laminar airflow hood B) autoclave C) oven D) alcohol pad