Immunofluorescence or immunoperoxidase assays are commonly used to detect whether a virus is present in a tissue sample. These tests are based on the principle that if the tissue is infected with a virus, an antibody specific to that virus will be able to bind to it.

4 0

3 years ago

The thoracic and sacral curvatures of the vertebral column are ________ while the cervical and lumbar curvatures are

Crazy boy [7]

Answer:

The thoracic and sacral curvatures of the vertebral column are convex while the cervical and lumbar curvatures are concave.

7 0

3 years ago

Which describes a similarity between abiotic and biotic factors?

Bad White [126]

Answer: They are both necessary for organisms to survive.

Explanation:

Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.

4 0

3 years ago