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.
Ponies tend to have a calmer temperament than horses. Ponies are also good pack animals. Though ponies are used for pulling carts and carriages, the horses are more frequently used for this. People do not like to ride ponies, but they mostly prefer a ride on a horse. Summary: 1.Ponies are shorter than horses. When ponies come to a height up to 14.2 hands (hands are generally used to determine the height of horses and ponies), the horses come to a height of more than 14.2 hands and mostly 15.2 hands. It is not only that the pony and horse are different in their height, but they also show certain distinct features. When comparing the body features, ponies are a bit stockier than horses. Ponies are stronger than horses. As the ponies have a sturdy body, they have more resistance to cold conditions than horses.