The red blood cells take up an abnormal, rigid, sickle shape.

According to the publication, Lewinsky told pals that the presidential organ "had an abnormal shape."

Doctors believe that the diseases develop when a normal protein found on the the surface of cells somehow misfolds into an abnormal shape.

The disease is caused by a protein, called a prion, that folds itself into an abnormal shape.

One of the chromosomes may be of abnormal shape.

For unknown reasons, a normal protein called a prion twists into an abnormal shape, usually in the brain.

For many minutes, he was an abnormal shape that flitted through the wilderness of walls and floors.

We know however that their height and abnormal shapes make the top of these rock giants inaccessible even to experienced rock-climbers.

For as yet unknown reasons, the cells take on an abnormal shape, resembling a mouth or 'stoma'.

An abnormal shape in the cornea or lens can also lead to farsightedness.