Biology News
Department of Chemistry and Biochemistry Invests in System to Recycle a Precious Resource, Helium - University of Arkansas Newswire

University of Arkansas Newswire
The Department of Chemistry and Biochemistry in the J. William Fulbright College of Arts and Sciences recently installed a liquid helium recovery system. Wesley Stites, the department's chair, said the investment for the system cost about $250,000, but ...

New system can identify drugs to target 'undruggable' enzymes critical in many diseases - Science Daily

Science Daily
Scientists from the Medical Research Council (MRC) Laboratory of Molecular Biology, in Cambridge, UK, demonstrated the capabilities of the new system by identifying a molecule that could successfully target a phosphatase to reduce the accumulation of ...

Pharmacology of CAR-T Cells -
Chimeric antigen receptor (CAR)-T cells are T cells which are genetically modified by the addition of tumor-reactive chimeric antigen receptors (CARs). The T cells are the workhorses of the immune system. Adoptive transfer of these cells is an emerging ... The Excretory System

Diego Martin - Trinidad and Tobago

The excretory system is responsible for removing unwanted waste products from the body's chemistry. Generally speaking, excretion is the process of separating wastes from the body's fluids and eliminating them. Examples include the removal of carbon dioxide in the air we exhale, and unwanted nitrogen in sweat, nails and hair. (Don't confuse excretion with defecation. Defecation is getting rid of undigested foods from the body... via the colon.)

There are four (4) organ systems that are responsible for excretion:
1. The respiratory system helps to excrete carbon dioxide, water, and other gases when we breathe.
2. The integumentary system also excretes some water in addition to inorganic salts, lactic acid, and urea in sweat.
3. The digestive system not only eliminates food residue (which is not a process of excretion) but also excretes water, salts, carbon dioxide, lipids, bile pigments, and cholesterol.
4. The fourth is the (excretory) urinary system. We will place the most emphasis on this organ system, as it includes the kidneys. It excretes a wide variety of metabolic wastes, toxins, drugs, salts, water, hormones, and hydrogen irons.

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Overall, the excretory system acts in order to maintain a healthy fluid environment within animals. It works in order to remove nitrogenous wastes such as ammonia (which is a highly toxic compound). Due to the fact that osmoregulation is structurally and functionally linked in many animals, the process of osmoregulation will also be included. Osmoregulation is the general process by which animals control solute concentrations and balance water ga

BRENDA: The Comprehensive Enzyme Information System

Searchable database. The information on enzyme functions is extracted directly from the primary literature.

Excretory/Urinary System
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Information on how humans and other animals excrete liquid waste.

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Offers a simple explanation on how toxins are removed from the body.

Overview Of The Excretory System, An
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Parts of the Excretory System
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The excretory system plays a vital role in ridding the body of extraneous wastes and toxins. The excretory system is made up of various internal organs that work together to detoxify the body. The Skin The skin is responsible for producing sweat, which helps regulate the salt concentration in the body. When you sweat, the salt helps evaporate the water and, in turn, cools off the body. The Liver The liver is part of the digestion system,

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IUCN task force report on methods for optimizing national protected areas systems that maximise species conservation through targeted selection based on broadly accepted ecological principles. [PDF]

Human Body Excretory System
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The excretory system is in charge of getting rid of bodily wastes and excess water. Jobs of the excretory system: Maintain volume of extracellular (outside the cells) fluid Maintain ionic balance in extracellular fluid Maintain pH and osmotic concentration of the extracellular fluid. Excrete toxic by-products such as urea, ammonia, and uric acid. Parts of the excretory system: Kidneys: Within each kidney are an estimated one mill

On-Line Biology Book: The Excretory System
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Description and diagrams.

Polycystic Kidney Diseasess

Describes the course of PKD in one cat and provides links to further resources.