This interaction may play a role in determining tissue tropism and host range.

This suggests that tissue tropism is determined after cellular infection.

Perhaps the strategy is linked to the particular tissue tropism of C. psittaci.

Hence, tissue tropism must be a crucial factor.

Some viruses have a broad tissue tropism and can infect many types of cells and tissues.

Bacterial adhesins provide species and tissue tropism.

Tissue tropism develops in the following stages:

In virology, tissue tropism is the cells and tissues of a host which support growth of a particular virus or bacteria.

The tissue tropism of serotype 1 is extremely broad, including human, sheep, horse, dog, camel and other mammalian hosts.

In short, the tissue tropism correlates with ability to convert indole to L-tryptophan in vivo.

Factors influencing viral tissue tropism include:

The interactions between coronaviruses and host cell receptors are critical determinants of species-specificity, tissue tropism, and virulence.

Background Chlamydiae are obligate intracellular pathogens that infect a variety of host organisms and exhibit individual tissue tropisms within a host species.

This unique replication strategy, plus they have extremely small viral genome, and a very narrow host range and tissue tropism, make it designated as family hepadnaviridae.

These include virulence phenotypes, phenotypes associated with viral transmissibility, cell or tissue tropism phenotypes, and antigenic phenotypes that can facilitate escape from host immunity.

However, specific tissue tropisms can vary between species; in pigs, the majority of tissue cysts are found in muscle tissue, whereas in mice, the majority of cysts are found in the brain.

Due to the impact that transmission dynamics and selection can have on viral genetic variation, viral phylogenies can therefore be used to investigate important epidemiological, immunological, and evolutionary processes, such as epidemic spread, spatio-temporal dynamics including metapopulation dynamics, zoonotic transmission, tissue tropism, and antigenic drift.