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).
shake culture. A method for isolating anaerobic bacteria by shaking a deep liquid culture of an agar or gelatin to distribute the inoculum before solidification of the medium. A liquid medium in a flask that has been inoculated with an aerobic microorganism and placed on a shaking machine; action of the machine continually aerates the culture.