 act as a repulsive cue in development and inhibit regeneration of mature neurons. Causes the collapse of the nerve growth cone ...
Family of collagenous lectins believed to play an important part in first-line defence by binding to viruses and by opsonizing yeasts and bacteria. Contain a collagen-like region ...
Plant tissue in which the primary cell walls are thickened, especially at the cell corners. Acts as a supporting tissue in growing shoots, leaves and petioles. Often arranged in ...
Stellate cells with long thin processes that ramify through the inhalent canal system of sponges.
Properties that depend upon the numbers of molecules present in solution rather than their chemical characteristics.
Lens that produces a non-divergent beam of light or other electromagnetic radiation. Simpler collimators involve slits. Essential in obtaining good illumination in microscopy and ...
The pili on enteropathogenic forms of E. coli facilitate adhesion of the bacteria to receptors (probably GM1 gangliosides) on gut epithelial cells and are often referred to as ...
Irradiated mice can have their immune systems reconstituted by the injection of bone marrow cells from a non-irradiated animal. The injected cells form colonies in the ...
The first milk secreted by an animal coming into lactation. May be especially rich in maternal lymphocytes and Ig and thus transfer immunity passively.
Large flat organelles formed by the fusion of many cilia. Vertical rows of comb-plates form the motile appendages of Ctenophores.
Method by which large numbers of compounds can be made, usually utilizing solid-phase synthesis. In the simplest form carrier beads would be treated separately so as to couple ...
(= severe combined immunodeficiency syndrome)
Congenital immunodeficiency with thymic agenesis, lymphocyte depletion and hypogammaglobulinaemia: both cellular and humoral ...
Any region of a molecule that binds or reacts with a given compound. Especially of the region of immunoglobulin that combines with the determinant of an appropriate antigen.
Process that occurs during the morula stage of embryogenesis in which blastomeres increase their cell-cell contact area and develop gap junctions. In mice compaction occurs ...
Relatively small plant cell, with little or no vacuole, found adjacent to a phloem sieve tube and originating with the latter from a common mother cell. Thought to be involved ...
In the insect wing, for example, there are two compartments, anterior and posterior, each containing several clones, but clones do not cross the boundary. It seems from studies ...
(1) Bacterial cells with enhanced ability to take up exogenous DNA and thus to be transformed. Competence can arise naturally in some bacteria ( Pneumococcus, Bacillus and ...
Inhibitor that occupies the active site of an enzyme or the binding site of a receptor and prevents the normal substrate or ligand from binding. At sufficiently high ...
A heat-labile system of enzymes in plasma associated with response to injury. Activation of the complement cascade occurs through two convergent pathways. In the classical ...
Binding of complement as a result of its interaction with immune complexes (the classical pathway) or particular surfaces (alternative pathway).
complementary base pairs
The crucial property of DNA is that the two strands are complementary: Guanine and cytosine are complementary and pair up through their hydrogen bonds, as are adenine and ...
The ability of a mutant chromosome to restore normal function to a cell that has a mutation in the homologous chromosome when a hybrid or heterokaryon is formed - the ...
Nerve-terminal syntaxin-binding proteins.
See concanavalin A.
Con A receptors
A common misuse of the term receptor. Con A binds to the mannose residues of many different glycoproteins and glycolipids and the binding is therefore not to a specific site. ...
Non-haem iron-binding protein found in chicken plasma and egg white.
Class of small peptides (17-21 residues) from Conus spp. that inhibit NMDA class of glutamate receptors.
(= Con A)
A lectin isolated fro