Author: Glossary

A lightweight orthosis for the head and neck used to restrict cervical movement.  

The removal of blood or other body fluids from a patient, separating certain elements (e.g., immunoglobulins, platelets, or red blood cells) and reinfusing the remaining elements into the patient.  

Yellow-brown, sulfur-containing pigments present as the pigment in human red hair. A type of melanin that is red to yellow in color. People with light-colored skin mostly produce pheomelanin There are two types of melanin; the other type is eumelanin.  

A chromaffin cell, such as one of those in the adrenal medulla, that gives a positive chromaffin reaction, i.e., it yields a yellowish reaction with chrome salts. A cell found in the sympathetic nerve ganglia and the adrenal gland’s medulla. These cells can be stained yellow using chromic acid salts.  

Embryonic cells that develop into pheochromocytes.  

Staining darkly with chrome salts.  

A form of inherited mental retardation resulting from phenylketonuria.  

An oily nitrogenous base used as a test for the presence of sugar in the urine.