Blood Analysis
Blood is a fluid substance that circulates in the arteries and veins of the body. Blood is bright red or scarlet when it has been oxygenated in the lungs and passes into the arteries; it becomes bluish red when it has given up its oxygen to nourish the tissues of the body and is returning to the lungs through the veins and the tiny vessels called capillaries. In the lungs, the blood gives up the carbon dioxide wastes it has taken from the tissues, receives a new supply of oxygen, and begins a new cycle. This movement of blood is brought about by the coordinate activity of the heart, lungs, and blood vessels. Blood is composed of a yellowish fluid, called plasma, in which are suspended the millions of cells that constitute about 45 percent by volume of whole blood. It has a characteristic odor and a specific gravity between 1.056 and 1.066. In an average healthy adult, the volume of blood is one-eleventh of the body weight, or between 4.5 and 6 liters (5 and 6 qt). A great portion of the plasma is composed of water, a medium that facilitates the circulation of the many indispensable factors of which blood is composed. A cubic millimeter of human blood contains about 5 million red corpuscles called erythrocytes; 5000 to 10,000
The four blood types are known as A, B, AB, and O. Blood type A contains red blood cells that have a substance A on their surface. This type of blood also contains an antibody directed against substance B, found on the red cells of persons with blood type B. Type B blood contains the reverse combination. Serum of blood type AB contains neither antibody, but red cells in this type of blood contain both A and B substances. In type O blood, neither substance is present on the red cells, but the individual is capable of forming antibodies directed against red cells containing substance A or B. If blood type A is transfused into a person with B type blood, anti-A antibodies in the recipient will destroy the transfused A red cells. Because O type blood has neither substance on its red cells, it can be given successfully to almost any person. Persons with blood type AB have no antibodies and can receive any of the four types of blood; thus blood types O and AB are called universal donors and universal recipients, respectively. Where was the assailant during and following the assault? Is the bloodstain evidence consistent with the medical examiner findings? DNA Detection is a very important part of blood analysis. Thanks to a powerful biochemical tool called polymerase chain reaction (PCR), it is possible to detect incredibly tiny amounts of particular DNA molecules. Even one single molecule can be enough! http://www.watchtower.org/medical_care_and_blood.htm Other hereditary blood-group systems have subsequently been discovered. The hereditary blood constituent called Rh factor is of great importance in obstetrics and blood transfusions because it creates reactions that can threaten the life of newborn infants. Blood types M and N have importance in legal cases involving proof of paternity. QHP 7694 Head Space Sampler is a machine that equilibrates the sample vials at the desired temperature for the specified time period. A needle then punctures the teflon coated septum at the top of the vial and draws a measured sample of the vapor which it sends to the Gas Chromatograph.
Some common words found in the essay are:
AB Blood, , DNA Detection, Pattern Analysis, Space Sampler, BPA Court, Power Macintosh, Device FID, Gas Chromatographwhich, Chromatograph Static, blood type, type blood, red cells, gas chromatograph, blood types, head space, red blood cells, blood cells, blood analysis, blood contains, flame ionizing, neither substance red, substance red cells, static head space, vapors gas chromatograph,
Approximate Word count = 1478
Approximate Pages = 6 (250 words per page double spaced)
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