has part has part has_part characteristic of part of has modifier abnormal hippocampus layer morphology abnormal hippocampus stratum radiatum morphology csmith any structural anomaly of the layer located immediately above the pyramidal cell layer in CA2 and CA1 and superficial to the stratum lucidum in CA3. Suprapyramidal region in which CA3 to CA3 associational connections and CA3 to CA1 Schaffer collateral connections are located MP:0011151 2011-05-23T03:29:51Z MPheno.ontology morphology abnormal hippocampus stratum radiatum