What will happen when both tubes are opened?
A. Nothing.

B. A vacuum will be created and the mercury level
will be the same in both tubes.

C. A vacuum will be created but the larger vacuum
space in the bubble tube will pull the mercury
further up the tube.

this protocol describes a detailed procedure for intracellular flow cytometry staining.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.