Cervical cancer is cancer that starts in the cervix. The cervix is the lower part of the uterus (womb) that opens at the top of the vagina. Worldwide, cervical cancer is the third most common type of cancer in women. It is much less common in the United States because of the routine use of Pap smears. Cervical cancer starts in the cells on the surface of the cervix. There are 2 types of cells on the surface of the cervix, squamous and columnar.
A balk is an illegal act by the pitcher when one or more runners are on base. The rule is in place to prevent a pitcher from deceiving the baserunners. When a balk is called, the ball is dead and all runners move up one base.
A balun is a type of transformer: it's used to convert an unbalanced signal to a balanced one or vice versa. Baluns isolate a transmission line and provide a balanced output.A typical use for a balun is in a television antenna. The term is derived by combining balanced and unbalanced.hen this is done, the device does not operate as a true balun, because both the input and the output are unbalanced. A balun used in this way has been called an un-un (for unbalanced-to-unbalanced).