- Urea by Webster's
... a.) A very soluble crystalline body which is the chief constituent of the urine in mammals and some other animals. It is also present in small quantity in blood, serous fluids, lymph, the liver, etc.
- digestive gland by Serenity Bell
Any one of the many structures that secrete agents involved in the breaking down of food into the constituent absorbable substances needed for metabolism. Some kinds of digestive glands are the salivary glands, gastric glands, intestinal glands, liver, and pancreas. Among important secretions produced by different digestive glands are hydrochloric acid, bile, mucus, and various enzymes.
- Murexide by Webster's
... n.) A crystalline nitrogenous substance having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. Formerly called also ammonium purpurate.
- cholesterol by Antonio Manning
N. A white crystalline substance found in animal tissues and various foods, normally synthesized by the liver and important as a constituent of cell membranes and a precursor to steroid hormones. Its level in the bloodstream can influence the pathogenesis of certain conditions, such as the development of atherosclerotic plaque and coronary artery disease.
- Xanthin by Webster's
A white microcrystalline nitrogenous compound, C5H4O2N4, present in muscle tissue, in the liver, spleen, pancreas, and other organs, and also in urine (in small quantities) and some urinary calculi, and in the juices of certain plants; -- so called because it leaves a yellow residue when evaporated to dryness with nitric acid. Xanthine is closely related to uric acid.(n.) One of the gaseous or ...