bacteria - n. living things that are one cell and can be seen only through a microscope; some cause disease.

capillary - n. resembling a hair especially in slender elongated form.

choke - n. to make (someone) unable to breathe in a normal way

heartbreaking - n. causing intense sorrow or distress.

carbohydrates - n. any one of various substances found in certain foods (such as bread, rice, and potatoes) that provide your body with heat and energy and are made of carbon, hydrogen, and oxygen.