What are proteins and how much do you need?

Proteins:

Proteins are large molecules that our cells need to function properly. They consist of amino acids. The structure and function of our bodies depend on proteins. The regulation of the body's cells, tissues, and organs cannot happen without them.

Muscles, skin, bones, and other parts of the human body contain significant amounts of protein, including enzymes, hormones, and antibodies.

Proteins also work as neurotransmitters. Hemoglobin, a carrier of oxygen in the blood, is a protein.

What are proteins?

Proteins are long chains of amino acids that form the basis of all life. They are like machines that make all living things, whether viruses, bacteria, butterflies, jellyfish, plants, or human function.

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Lab-grown sperm makes healthy offspring

Sperm have been made in the laboratory and used to father healthy baby mice in a pioneering move that could lead to infertility treatments.

The Chinese research took a stem cell, converted it into primitive sperm and fertilised an egg to produce healthy pups.

The study, in the Journal Cell Stem Cell, showed they were all healthy and grew up to have offspring of their own.

Experts said it was a step towards human therapies.

It could ultimately help boys whose fertility is damaged by cancer treatment, infections such as mumps or those with defects that leave them unable to produce sperm.

Sperm factory

Making sperm in the testes is one of the longest and most complicated processes in the body - taking more than a month from start to finish in most mammals.

Read more: Lab-grown sperm makes healthy offspring

Source: bbc