| Type | MGI:General | Description | although the kinetics of K+-depolarization-stimulated glutamate release in the presence of Ca2+ from synaptosomes isolated from homozygous mutant and wild-type brains are similar, alpha-latrotoxin-stimulated glutamate release from synaptosomes of mutant brains is reduced to approximately 25% that from wild-type synaptosomes in the presence or absence of Ca2+ |