OBSOLETE. An opsin with maximal absorption below 400 nm.

The process in which the distal tubule of the pronephric nephron acquires its identity.

The process in which the distal tubule of the kidney nephron acquires its identity.

OBSOLETE. (Was not defined before being made obsolete).

The process in which the anatomical structures of a pronephric nephron proximal tubule are generated and organized. A pronephric nephron tubule is an epithelial tube that is part of the pronephros.

The process in which the anatomical structures of a proximal tubule are generated and organized. The proximal tubule is a nephron tubule that connects Bowman's capsule to the descending thin limb of the loop of Henle. It has a brush border epithelial morphology.

OBSOLETE. (Was not defined before being made obsolete).

OBSOLETE. Acts as to cause injury to other living organisms.

The directed movement of the spindle to a specific location in the cell.

A large ribonucleoprotein complex considered to be the earliest preribosomal complex. In S. cerevisiae, it has a size of 90S and consists of the 35S pre-rRNA, early-associating ribosomal proteins most of which are part of the small ribosomal subunit, the U3 snoRNA and associated proteins.

A preribosomal complex consisting of 27SA, 27SB, and/or 7S pre-rRNA, 5S rRNA, ribosomal proteins including late-associating large subunit proteins, and associated proteins; a precursor of the eukaryotic cytoplasmic large ribosomal subunit.

Synthesis and deposition of a collagen and cuticulin-based noncellular, hardened, or membranous secretion from an epithelial sheet. An example of this process is found in Caenorhabditis elegans.

A preribosomal complex consisting of 20S pre-rRNA, ribosomal proteins including late-associating small subunit proteins, and associated proteins; a precursor of the eukaryotic cytoplasmic small ribosomal subunit.

The cell cycle process in which two small cells are generated, as byproducts destined to degenerate, as a result of the first and second meiotic divisions of a primary oocyte during its development to a mature ovum. One polar body is formed in the first division of meiosis and the other in the second division; at each division, the cytoplasm divides unequally, so that the polar body is of much smaller size than the developing oocyte. At the second division in which a polar body is formed, the polar body and the developing oocyte each contain a haploid set of chromosomes.

A cell cycle process that results in the division of the cytoplasm of a cell after meiosis, resulting in the separation of the original cell into two daughter cells.

Migration of a cell in a multicellular organism that, having changed its location, is required to induce normal properties in one or more cells at its new location. An example of this would be the distal tip cells of Caenorhabditis elegans.

Enables the transfer of metal ions from one side of a membrane to the other.

OBSOLETE. Enables the directed movement of heavy metal ions into, out of or within a cell, or between cells. Heavy metals are those that can form a coordination bond with a protein, as opposed to an alkali or alkaline-earth metal that can only form an ionic bond; this definition includes the following biologically relevant heavy metals: Cd, Co, Cu, Fe, Hg, Mn, Mo, Ni, V, W, Zn.