Club Cells Among Mammals Used in Lung Research

In order to investigate mammalian differences in Club cells, Plopper et al. Conducted three studies to quantitatively and qualitatively assess Club cells in mammals for lung studies [1-4]. In the first study, researchers examined the lung tissue of adult male rabbits, guinea pigs, rats, hamsters. Lung tissues from 4 male rabbits, 4 male guinea pigs, 6 male rats and 8 male hamsters were used. Each animal was sedated with pentobarbital, tracheal intubated and the contents of the chest removed together.

Mammals and reptiles lived on earth for hundreds of years. Both mammals and reptiles inhale oxygen and are vertebrate animals that need a nutritious high living life. Both have the same organ constituents such as brain, heart, stomach, lung and the like. Both mammals and reptiles are tetrapods, which means they all have arms and legs. Mammals are vertebrate animals that can produce young turnip. Most offspring still can not find food and needs to supply nutrition in breast milk from breast milk. Mammals have fur, hair and sweat glands. In addition, mammals have a part of the brain called a new cortex that regulates body temperature. They also have a middle ear and a lower jaw made of a single bone.

Today there are about 5,000 mammals. Unlike other vertebrates, mammals are nourished by the mother's special breast milk. Mammals have several other unique features. It is disappearing in many whales except during fetal life, but hair is a typical mammalian character. The mandible of the mammal does not pass through independent bones (squares) like all other vertebrates, it is attached directly to the skull. Three small bone rows passed the acoustic waves through the middle ear. The diaphragm of the muscles separates the heart and the lung from the abdominal cavity. All mammalian mature erythrocytes (red blood cells) lack nuclei; all other vertebrates have nuclear red blood cells. The oldest known animal classified in mammals evolved near the Triassic and Jurassic boundary about 200 million years ago.