A brain natriuretic peptide (BNP) test measures the amount of the BNP hormone in your blood. BNP is made by your heart and shows how well your heart is working.Normally, only a low amount of BNP is found in your blood.uide. A brain natriuretic peptide (BNP) test measures the amount of the BNP hormone in your blood. BNP is made by your heart and shows how well your heart is working. Normally, only a low amount of BNP is found in your blood.
Bacterial cultures can be preserved for long by suspending in glycerol broth and storing at -20 to -70 degree Celsius. The protocol as below: To 0.85 ml of bacterial culture, add 0.15 ml of sterile glycerol (sterilized by autoclave, final glycerol concentration : 15%, v/v).
In most prepackaged, processed foods, however, it is unlikely to find any sizable quantities of live bacteria (probiotics) due to the use of heat and chemicals in food processing. This same situation can take place with cultured dairy products, such that yogurts and kefirs can contain no live bacteria cultures even though live bacteria were at one time added to the milk. For this reason, it's important to select cultured dairy products that indicate contains live cultures or contains active cultures on the packaging. Some manufactures will actually report the amounts of live culture contained in the product. Live bacterial cultures can be added to other foods besides dairy foods.