The theory goes that these weren't normal rocks but rather the equivalent of cosmic sponges, loaded with water that was released on impact. While astronomers have confirmed that some asteroids and comets hold water, some scientists think the theory doesn't.
Western blot using an antibody that recognizes proteins modified with lipoic acid. The western blot (sometimes called the protein immunoblot) is a widely used analytical technique used to detect specific proteins in a sample of tissue homogenate or extract.It uses gel electrophoresis to separate native proteins by 3-D structure or denatured proteins by the length of the polypeptide.he name western blot was given to the technique by W. Neal Burnette and is a play on the name Southern blot, a technique for DNA detection developed earlier by Edwin Southern.
An ultrasound can detect a pregnancy as early as 4 to 5 weeks after your last menstrual period. A transvaginal ultrasound will give a clearer view than an abdominal ultrasound at this early date. The earliest sign of a pregnancy is a tiny sac in the uterus, which may be seen as early as 4 weeks after your last period.