bloodstream

Nicotine pouches, often sold in cans, are small tea-bag-like rectangles that contain white powder that releases nicotine into the bloodstream when placed between a person's upper lip and gum.

Drug-resistant superbugs can escape their intestinal home and cause trouble elsewhere in the body – such as urinary tract or bloodstream infections.

They communicate with the brain through the bloodstream and the vagus nerve, which runs through the throat and vocal cords and connects the gut and brain.

They are not standalone entities but interconnected, and together they form the bloodstream of the economy.

Although she once was hooked up 24 hours a day to the feeding system that delivered nutrients directly into the bloodstream, doctors began weaning her off as her intestines got stronger.