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[lemma=may] [□=□] □ □
[lemma=may] [□ & □] □ □
" Cohen said that along with studying the virus and immunological defenses , CHAVI also has the resources to study genetic factors that may be involved in HIV acquisition , including host genetic factors influencing infection and early progression of HIV-1 disease . My colleagues and I are currently attempting to assess these components and explore other factors that may be involved in the chimpanzees ' decision-making process . This is why I believe some of the next generation 's environmental heroes are going to be biologists and geneticists working at the cellular and molecular level , who will be able to both shorten the time to identify which chemicals may be involved in adverse effects ( and which may not ) , and then to quickly find a relatively inexpensive way to deal with the problems . These studies are designed to gain an understanding of the processes that may be involved in the normal development of behavioral state and physiologic control during sleep , as well as those that accompany Sudden Infant Death Syndrome ( SIDS ) , learning deficits , and mental retardation , and changes across the lifespan in reproductive health .