Immunosuppressed persons infected with (B19 virus/EBV/JC virus) may develop progressive multifocal leukoencephalopathy (PML).
Fill in the blank(s) with the appropriate word(s).
JC virus
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A stamen is
a. composed of a stigma, a style, and an ovary. b. the mature male gametophyte. c. the site where microspores are produced. d. part of the vegetative phase of an angiosperm. e. none of these.
Modified leaves that protect meristematic tissue at the tips of woody plants are known as:
a. bulbs. b. bud scales. c. spines. d. tendrils. e. scale scars.
Place the following steps of phagocytosis in the order that they occur:
1. Endosome fuses with lysozome 2. Dendritic cell engulfs Rhinovirus 3. Epitopes are attached to MHC-II 4. Digestion of the Rhinovirus 5. MHC-II plus the attached epitope move to the outside of the dendritic cell a. 1,2,4,3,5 b. 2,4,1,3,5 c. 2,1,4,3,5 d. 2,1,3,4,5
The nervous system develops from the endoderm
Indicate whether the statement is true or false