Which assay format has the lowest equipment cost?

In flow cytometry, forward scatter provides a measure of cell granularity.

A ligase is an enzyme that: 

A serological test that uses RBCs coated with exogenous antigens such as bacterial polysaccharides as a method to detect patient antibodies against those exogenous antigens is called:

A serial dilution with the following tubes is set up: 1:2, 1:4, 1:8, 1:16, 1:32, and 1:64. There is no visible agglutination in the 1:64 tube. What is the titer of the antibody?

Identify the layer of the eye between the tips of the yellow and black arrows.

Identify the bracketed opening.

Identify the type of spinal nerves in the yellow box.

Identify the structure indicated by the yellow arrow. Be very specific.

When shipping samples, regulations from which agency need to be followed?