The directed movement of mercury (Hg) ions into, out of, within or between cells.

The directed movement of organic cations into, out of, within or between cells. Organic cations are atoms or small molecules with a positive charge which contain carbon in covalent linkage.

The directed movement of ammonium into, out of, within or between cells. Ammonium is the cation NH4+ which is formed from N2 by root-nodule bacteria in leguminous plants and is an excretory product in ammonotelic animals.

The formation from simpler components of C21-steroid hormones, steroid compounds containing 21 carbons which function as hormones.

The directed movement of inorganic anions into, out of, within or between cells. Inorganic anions are atoms or small molecules with a negative charge which do not contain carbon in covalent linkage.

The formation from simpler components of progesterone, a steroid hormone produced in the ovary which prepares and maintains the uterus for pregnancy. Also found in plants.

A network of small fibers that surrounds the centrioles in cells; contains the microtubule nucleating activity of the centrosome.

The formation from simpler components of androgens, C19 steroid hormones that can stimulate the development of male sexual characteristics.

The formation from simpler components of estrogens, C18 steroid hormones that can stimulate the development of female sexual characteristics. Also found in plants.

The formation of a tri-snRNP complex containing U4 and U6 (or U4atac and U6atac) snRNAs and U5 snRNAs and associated proteins. This includes reannealing of U4 and U6 (or U4atac and U6atac) snRNAs released from previous rounds of splicing to reform the U4/U6 snRNP (or U4atac/U6atac snRNP) as well as the subsequent association of the U5 snRNP with the U4/U6 snRNP (or U4atac/U6atac snRNP) to form a tri-snRNP that is ready to reassemble into another spliceosome complex.

The formation from simpler components of glucocorticoids, hormonal C21 corticosteroids synthesized from cholesterol.