Answer:
Not sure how to help sorry.
Explanation:
Answer:
The best answer to the question: Anemia can be caused by a diet lacking in which nutritional substances?, would be, D: Folic acid and vitamin B12.
Explanation:
Anemia, is usually defined as a problem in the formation of red blood cells, or, erythrocites. Usually, there are a number of nutrients, such as vitamins and minerals, that play a vital role in the formation of these erythrocites. One such mineral is iron, which is why, when it is lacking in the diet, it can cause an anemia called iron-deficiency anemia. In this case, the anemia, which is either a reduced production of red-blood cells, or, cells that are incapable of carrying out their duty as oxygen-transporters, is caused by a dietary deficiency. Another form of this can be when the body itself, through an illness, is incapable of producing these cells. However, aside from iron, there are other two nutrients that are vital in the correct formation of erythrocites, and in their being efficent transporters: folic acid, also known as folate, and vitamin B12, both necessarily supplied by the diet, as the body cannot produce them.
Vaccines are the most efficacious means of minimizing the impact of infectious diseases on the human population. The challenges and importance of making vaccines that will meet FDA approval have never been greater. Genomics has the potential to improve the process of vaccine development substantially. Genome sequencing can help to identify genetic patterns related to the virulence of a disease, as well as genetic factors that contribute to immunity or successful vaccine response. All this information could lead to vaccines with better and more specific targets that elicit more successful protective immune responses. Comparing the genome sequences of viruses that cause infection with those that do not may provide additional insights. In turn, genome manipulation can facilitate derivation of attenuated strains or other vehicles for delivery of the desired antigens to stimulate immune response. On the other end of the spectrum, analysis of host diversity can reveal effective immune responses and possibly the genetic basis for inappropriate response. The recent progress in definition of the innate immune system, necessary for acquired response, should facilitate the definition of this host diversity.