Where the cancer starts is called the primary tumour. Some types of cancer, called leukaemia, start from blood cells. They don't form solid tumours. Instead, the cancer cells build up in the blood and sometimes the bone marrow. For a cancer to start, certain changes take place within the genes of a cell or a group of cells.
pommel horse. n. 1. A piece of gymnastic equipment that consists of a padded, loaf-shaped object with two pommels on top and stands horizontal to the floor, usually on adjustable legs. 2. An athletic event in which the pommel horse is used.
Foals and ponies are often mistaken with each other because of the fact that they look a lot alike. They are both small. When compared, these two are usually similar in physical looks but not in age. A foal is still a baby horse, while a pony might already be an adult. A foal is a term for a baby horse. They are the horses not more than one year of age. Ponies are a part of the equine family and are naturally short. They have shorter legs and fatter bodies than those of the horses.