Researchers suggest that the loss of pyruvate carboxylase function in the nervous system, particularly the role of the enzyme in myelin formation and neurotransmitter production, also contributes to the neurologic features of pyruvate carboxylase deficiency.
ctenocephalides in Medicine. Ctenocephalides CtenÂ·oÂ·ceÂ·phalÂ·iÂ·des (tÄn'Å-sÉ-fÄl'Ä­-dÄz') n. A genus of fleas that includes species that are parasitic on dogs and cats; the species found on dogs can transmit tapeworm to humans.
: a colloidal proteinaceous poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable, notably toxic when introduced into the tissues, and typically capable of inducing antibody formation. a poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable, notably toxic when introduced into the tissues, and typically capable of inducing antibody formation. See toxin defined for English-language learners. See toxin defined for kids.