All of the evidence provided on Hippocampome.org are quotes from scientific texts.
However, because quoted passages may be difficult to understand in isolation, contextual information and expanded abbreviations set in square brackets have been added for clarity.
Animal:
Protocol:
Expression:
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EXPRESSION: negative (inference)
ANIMAL: rat
PROTOCOL: mRNA
Page location: p3161, left top
"No SS [somatostatin] immunoreactivity was found in any 5-HT[serotonin] 3 R[receptor]-expressing neurons, although single SS-immunopositive or 5-HT 3 R-expressing neurons were identified readily in cortex and hippocampus."
Interpretation notes: Glutamatergic and GABAergic SOM+ types in SUB SM_SP_PL are probably 5HT-3- by contrapositive logic