Microcheck 143

Most animal viruses live in harmony with their natural hosts and do not cause serious illness. If the virus infects an unnatural host, a serious disease may result. The various kinds of relationships of animal viruses with their hosts are in general similar to those seen with bacterial viruses and bacteria. Replication of viral nucleic acid depends to varying degrees on the enzymes of nucleic acid replication of the host cells.

A retrovirus, HIV, is responsible for the disease AIDS, which has features of a latent, chronic, and slow infection. The replication of HIV involves an enzyme,

Nester-Anderson-Roberts: I II. The Microbial World I 14. Viruses, Prions, and I I © The McGraw-Hill

Microbiology, A Human Viroids: Infectious Agents Companies, 2003

Perspective, Fourth Edition of Animals and Plants

Reverse transcriptase

Envelope Spike

Host plasma membrane with receptors

Loss of envelope; nucleocapsid in host cytoplasm;

Envelope Spike

Nucleocapsid

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Bacterial Vaginosis Facts

Bacterial Vaginosis Facts

This fact sheet is designed to provide you with information on Bacterial Vaginosis. Bacterial vaginosis is an abnormal vaginal condition that is characterized by vaginal discharge and results from an overgrowth of atypical bacteria in the vagina.

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