Sometimes, the virus can be recognized by the intensity of symptoms caused in susceptible hosts.

'All that's got to happen is the microorganism gets in the air, let's say, and finds a susceptible host.'

Within a controlled laboratory setting, symptoms can appear in 14 days following inoculation into a susceptible host.

Breast cancer, like other cancers, occurs because of an interaction between an environmental (external) factor and a genetically susceptible host.

That is, it must be able to sustain itself in the environment when there are no susceptible hosts available to infect.

It is capable of causing secondary infections of susceptible hosts throughout the growing season.

This phenomenon makes the host susceptible to more common diseases, such as viral and bacterial infections.

But while hrp proteins are essential for penetrating a susceptible host, they can have a very different effect on a resistant plant.

Upon contact with a susceptible host, bacteria will enter through wounds or natural plant openings as a means to infect.

The most common symptom is abortion in pregnant susceptible hosts at any stage of gestation.