See Premature ventricular contraction GI disease The shortening of the muscularis propria of the GI tract, resulting in peristalsis. See Giant peristaltic contraction Obstetrics The shortening of myometrial cells, resulting in â intrauterine tension. See Braxton Hicks contraction Physiology A â in muscle length, accompanied by â tension.
New method for the early detection of vineyard mildew, powdery mildew and botrytis. May 9, 2013. The Basque Institute for Agricultural Research and Development, Neiker-Tecnalia, has developed a new method for the early detection of the diseases mildew, powdery mildew and botrytis in vines.
Detecting viruses: the plaque assay. One of the most important procedures in virology is measuring the virus titer â the concentration of viruses in a sample. A widely used approach for determining the quantity of infectious virus is the plaque assay. This technique was first developed to calculate the titers of bacteriophage stocks. Renato Dulbecco modified this procedure in 1952 for use in animal virology, and it has since been used for reliable determination of the titers of many different viruses.