Unique type of skeletal stem cells found in 'resting zone' are actually hard at work

Skeletal stem cells are valuable because it's thought they can heal many types of bone injury, but they're difficult to find because researchers don't know exactly what they look like or where they live, according to Science Daily.

Researchers at the University of Michigan have identified a type of skeletal stem cell in the "resting zone" of the epiphyseal growth plate, which is a special cartilaginous tissue and an important driver for bone growth.

Noriaki Ono, U-M assistant professor of dentistry, said that locating skeletal stem cells in the resting zone makes sense because it's widely believed that stem cells stay quiet until they're needed.

New human cell structure discovered

A new structure in human cells has been discovered by researchers at Karolinska Institutet in Sweden. The structure is a new type of protein complex that the cell uses to attach to its surroundings and proves to play a key part in cell division, according to Science Daily.

The cells in a tissue are surrounded by a net-like structure called the extracellular matrix. To attach itself to the matrix the cells have receptor molecules on their surfaces, which control the assembly of large protein complexes inside them.

These so-called adhesion complexes connect the outside to the cell interior and also signal to the cell about its immediate environment, which affects its properties and behaviour.

Could deafness be reversed?

 Scientists re-grow damaged hair cells that have been killed off by age or noise inside the ear

 Deafness could be reversed, research suggests.

Scientists have discovered how to regrow cells in the ear that are critical for hearing.

Viruses, genetics and even existing drugs could trigger little hairs to regrow in the inner ear, according to a study by the University of Rochester.

These hairs are the first step in picking up on noises and are not naturally replaced when killed off by age or overexposure to loud noise.

Humans do not regenerate hair cells in the inner ear once they are lost, which leads to permanent hearing damage, according to Daily Mail.

You really CAN follow your nose

People with a good sense of smell are better at navigation because the two skills use the same parts of the brain

When asking for directions, you should look for someone with a good sense of smell.

That is the advice of scientists who have found that people with a naturally good sense of direction also have a heightened ability to detect faint odours.

Brain scans revealed two specific regions of the brain that are heavily involved in the control of both skills, according to Daily Mail.

Never forget a face? Research suggests people know an average of 5,000 faces

For the first time scientists have been able to put a figure on how many faces people actually know- a staggering 5,000 on average.

The research team, from the University of York, tested study participants on how many faces they could recall from their personal lives and the media, as well as the number of famous faces they recognised.

Humans have typically lived in small groups of around one hundred individuals, but the study suggests our facial recognition abilities equip us to deal with the thousands of faces we encounter in the modern world -- on our screens as well as in social interactions, according to Science Daily.