Final answer:
The chemistry department commonly uses green tubes for plasma separation. Special stains are utilized with microscopes to view cell components, and the cell is the basic unit of life.
Step-by-step explanation:
The most common department to order green tubes in a medical laboratory is chemistry. Green tubes generally contain heparin, which prevents blood clotting, and are thus used for plasma separation for various chemistry tests. It is not typically the department of hematology, microbiology, or immunology that primarily uses green tubes.
Understanding Laboratory Departments and Specimen Processing
When it comes to microscopy, staining is an important technique used by scientists to view individual cell components more easily, typically a brightfield microscope with a stain is employed for this purpose. The basic unit of life is the cell, and for examining thick structures such as biofilms, a confocal scanning laser microscope or a scanning electron microscope would be especially useful.