Answer: For detection and confirmation of HIV antibodies in blood samples.
Explanation: As the name implies ELISA( Enzyme-linked immunosorbent assay) is the first test widely used for determining the presence of HIV in a person's serum because of its high sensitivity. In an ELISA, a person's serum is diluted 400 times and applied to a plate to which HIV antigens are attached. If antibodies to HIV are present in the serum, they may bind to these HIV antigens. The plate is then washed to remove all other components of the serum. A specially prepared "secondary antibody" (an antibody that binds to other antibodies) is then applied to the plate, followed by another wash. This secondary antibody is chemically linked in advance to an enzyme.
Thus, the plate will contain enzyme in proportion to the amount of secondary antibody bound to the plate. A substrate for the enzyme is applied, and catalysis by the enzyme leads to a change in color or fluorescence. ELISA results are reported as a number; the most controversial aspect of this test is determining the "cut-off" point between a positive and a negative result. A cut-off point may be determined by comparing it with a known standard. Unknown samples that generate a stronger signal than the known or control sample or are called "positive" while those that generate weaker signal are "negative".
The HIPAA is not an example of a limited data set.
1. diaphragm 2. the lungs 3a. carbon dioxide 3b. ciculatory system 4. the respitory stsem. 5. Tissues 6. capilaries 7. inhale
8. body systems 9. blood cells. 10. organs 11. the skeletal system. 12. arteries 13. oxygen 14. muscular system. 15. Alveoli 16. exhale 17. the heart. 18. veins
Answer:Hip fracture is more common in older people. This is because bones become thinner and weaker from calcium loss as a person ages. This is generally due to osteoporosis. Bones affected by osteoporosis are more likely to break if you fall.
