Biology, 18.12.2020 21:40 wcraig1998
My understanding of how dendritic cells, macrophages, and B cells interact with helper T cells is dendritic cells present antigens to helper T cells after bringing them from other environments, macrophages present antigens to memory helper T cells for acquired immunity, and B cells present antigens to helper T cells. I am trying to understand the difference in the roles of dendritic cells and B cells. Do dendritic cells present antigens to both memory helper and helper T cells while B cells only present them to helper T cells?
Answers: 3
Biology, 21.06.2019 13:30, WhiteWinterRose
Look at the punnett square for an x-linked recessive disease. is it possible for a female offspring to have the disease?
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Biology, 22.06.2019 03:30, tpenn2476
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Biology, 22.06.2019 15:00, alicemareus
Which of the following organisms are capable of self-fertilization? a. plants b. tigers c. humans
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Biology, 22.06.2019 15:30, Calebmf9195
(me out over the last several centuries, scientists have made the following broad observations while investigating several branches of the life sciences: -the fossil record shows that different types of organisms have existed at different times in earth's history. -many organisms have similar body structures that seem to be adapted to different ways of living in their environment. -organisms of different species often share similarities in stages of embryonic development. -many species share genetic similarities, and almost all organisms use the same basic building blocks to construct proteins. -often, the extent of two species' similarities can be predicted from their geographic closeness to each other. -a great deal of change has been observed among species that have experienced strong selective pressures through many generations. scientists have carefully considered and rigorously tested the observations listed above. when scientists offer a of these observations, they are making 1.) testable explanation, deductive explanation 2.) scientific interference, scientific law
Answers: 3
My understanding of how dendritic cells, macrophages, and B cells interact with helper T cells is de...
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