Category: S

Inorganic or organic compounds that contain sulfur as an integral part of the molecule.  

Inorganic salts of sulfuric acid.  

A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.  

An eleven-amino acid neurotransmitter that appears in both the central and peripheral nervous systems. It is involved in transmission of pain, causes rapid contractions of the gastrointestinal smooth muscle, and modulates inflammatory and immune responses. A chemical material, e.g. a drug. Matter or material. A generic word used for simplicity, as in “dangerous substance,” to…

Four to six lymph glands, located between the lower jaw and the submandibular salivary gland. Below the lower jaw.  

A type of injection made directly into the tis¬ sue beneath the skin, such as the upper arm or thigh, like most common “shots.” A medical term meaning beneath the skin. An example would be a subcutaneous injection, meaning an injection of medication into the tissue under the skin. A subcutaneous injection is given beneath…

Without clinical manifestations; said of the early stage(s) of an infection or other disease or abnormality before symptoms and signs become apparent or detectable by clinical examination or laboratory tests, or of a very mild form of an infection or other disease or abnormality. This is our turf, the period of time when a potential…

Situated or occurring between the arachnoid and the pia mater. Beneath the arachnoid membrane. Below or under the arachnoid membrane and above the pia mater of the covering of the brain and spinal cord.  

The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Other factors contributing to structure-activity relationship include chemical reactivity, electronic effects, resonance, and inductive effects.  

Large, veil-like cell in the bone marrow. The term used to describe the supportive tissue surrounding a particular structure is stromal tissue. An example of this is the tissue that surrounds and provides support to the functional lung tissue.