Answer
The portal of entry is the site through which pathogens enter the host body. Common portals include the respiratory tract, gastrointestinal tract, urogenital tract, and skin.
Is this note helpful?
The portal of entry is the site through which pathogens enter the host body. Common portals include the respiratory tract, gastrointestinal tract, urogenital tract, and skin.
We've detected that you are using AdBlock Plus or some other adblocking software which is preventing the page from fully loading.
We don't have any banner, Flash, animation, obnoxious sound, or popup ad. We do not implement these annoying types of ads!
We need money to operate the site, and almost all of it comes from our online advertising.
Please add biologynotesonline.com to your ad blocking whitelist or disable your adblocking software.