Hiv Cell Diagram


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Hiv Cell Diagram - hiv is different in structure from other retroviruses it is roughly spherical with a diameter of about 120 nm around 60 times smaller than a red blood cell it is posed of two copies of positive sense single stranded rna that codes for the virus s nine genes enclosed by a conical capsid posed of 2 000 copies of the viral protein p24 the single stranded rna is tightly bound to the genome and proteins of hiv human immunodeficiency virus have been the subject of extensive research since the discovery of the virus in 1983 in the search for the causative agent it was initially believed that the virus was a form of the human t cell leukemia virus htlv which was known at the time to affect the human immune system and cause certain leukemias clearly people of color are inordinately affected by this disease about 10 of hiv infected people progress to aids within 2 or 3 years of infection rapid progressors.
about 60 of adults adolescents will progress to aids within 12 13 years slow progressors about 5 10 of those infected will be symptom free with stable t4 cell counts after 8 to 15 years nonprogressors ictvdb description taxonomy synonym s rna tumor virus group and related agents ments in view of current knowledge of retroviruses the previous classification into subfamilies oncovirinae lentivirinae spumavirinae is no longer appropriate since the genera that made up for ex le oncovirinae are no more closely related or similar to one another than they are to members of this protein structure diagram illustrates the location of the fusion peptide epitope red on the hiv spike green which projects out of the viral membrane grey guides appendix 3 how hiv tests work what is an antigen an antigen is a substance found on a foreign organism such as a virus or bacteria which when how can.
an x chromosome be nearly as big as the head of the sperm cell no this isn t a mistake first there s less dna in a sperm cell than there is in a non reproductive cell such as a skin cell wilson disease is an inherited ge ic disorder associated with abnormal copper metabolism that results in excess storage of copper primarily in the liver and brain copper is an essential mineral that is absorbed into the body through the diet

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