In fact, messenger RNA is what makes possible proteins, peptides, and enzymes. Enzymes help do the chemistry inside living organisms and peptides make up some of the more interesting structural components of skin, hair, and even the horns of rhinos. Other natural polymers include polysaccharides (sugar polymers) and polypeptides like silk, keratin, and hair. Natural rubber is, naturally a natural polymer also, made from just carbon and hydrogen. Let's look at each of the main families of natural polymers closely.
By Mayo Clinic Staff. Accidentally swallowing or breathing in pinworm eggs causes a pinworm infection. The microscopic eggs can be carried to your mouth by contaminated food, drink or your fingers. Once swallowed, the eggs hatch in the intestines and mature into adult worms within a few weeks. Female pinworms move to the anal area to lay their eggs, which often results in anal itching. When you scratch the itchy area, the eggs cling to your fingers and get under your fingernails. The eggs then get transferred to other surfaces, such as toys, bed linens or toilet seats.
There are about 40 species of fungus that can cause ringworm in humans, but the most common belong to three genera. Trichophyton is the most common cause of ringworm in humans. Microsporum is the most common cause of ringworm in pets, but it can be transmitted to humans.