Considered good practice, to avoid two fielders colliding if both attempt to take the same catch. 2. A shouted, normally single word, instruction from a batsman to their partner, indicating whether to attempt a run. Only one batsman makes a call, to avoid confusion that could lead to a run out. Responsibility for making the call is held by whichever batsman has the better view of the ball and can see whether any fielders are close to it. This is most often the striker for a shot in front of square, and the non-striker for a shot behind square. Common possible calls include yes, no, wait, push, one, two or three. Cap
1. A type of soft material hat, traditionally worn by fielders. 2. An appearance for a national team. Captain
(or skipper) The player who has been appointed leader of their team. The captain decides which bowler will deliver each over, the placement of the fielders, the batting order, when to use the decision review system, whether and when to declare, and many other aspects of the game. The captains tactical abilities can have a major impact on the outcome of a match. The captain often has substantial responsibilities between games as well, such as in team selection or representing the team in the media. Carrom ball
a style of slow bowling delivery in which the ball is released by flicking the ball between the thumb and a bent middle finger in order to impart spin

Carry
1.
DNA viruses
Neither of these mechanisms explains ribavirins effect on many DNA viruses, which is more of a mystery, especially given the complete inactivity of ribavirins 2 deoxyribose analogue, which suggests that the drug functions only as an RNA nucleoside mimic, and never a DNA nucleoside mimic. Ribavirin 5-monophosphate inhibits cellular inosine monophosphate dehydrogenase, thereby depleting intracellular pools of GTP. History
Ribavirin was first made in 1972 under the national cancer institutes Virus-Cancer program. This was done by researchers from International Chemical and Nuclear Corporation including Roberts A. Smith, Joseph T. Witkovski and Roland K. Robins. It was reported that ribavirin was active against a variety of RNA and DNA viruses in culture and in animals, without undue toxicity in the context of cancer chemotherapies. By the late 1970s, the Virus-Cancer program was widely considered a failure, and the drug development was abandoned. Names
Ribavirin is the INN and USAN, whereas tribavirin is the BAN. Brand names of generic forms include Copegus, Ribasphere, Rebetol. Derivatives
Ribavirin is possibly best viewed as a ribosyl purine analogue with an incomplete purine 6-membered ring. This structural resemblance historically prompted replacement of the 2 nitrogen of the triazole with a carbon (which becomes the 5 carbon in an imidazole), in an attempt to partly "fill out" the second ring--- but to no great effect. Such 5 imidazole riboside derivatives show antiviral activity with 5 hydrogen or halide, but the larger the substituent, the smaller the activity, and all proved less active than ribavirin.