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A quantitative study of cholinesterase in myoneural junctions from rat and guinea‐pig extraocular muscles
Author(s) -
Buckley G. A.,
Heaton J.
Publication year - 1968
Publication title -
the journal of physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.802
H-Index - 240
eISSN - 1469-7793
pISSN - 0022-3751
DOI - 10.1113/jphysiol.1968.sp008676
Subject(s) - extraocular muscles , cholinesterase , guinea pig , anatomy , staining , free nerve ending , chemistry , biology , endocrinology , genetics
1. Cholinesterase staining of rat and guinea‐pig extraocular muscle shows focally and multiply innervated fibres. 2. The distribution of cholinesterase activities in the populations of focal endings (from singly innervated fibres) and fine motor endings (from multiply innervated fibres) was determined by a sensitive radiochemical method. 3. Focal endings had a greater cholinesterase activity than fine motor endings. 4. It is suggested that this difference in enzyme activities is related to the functional difference between twitch and slow fibres in extraocular muscle.