hippocampal formation ribonucleic acid amount CA1 stratum oriens ribonucleic acid amount 2025-07-15T16:58:03Z CA1 stratum oriens RNA amount VT:0011189 The proportion, quantity, or volume of ribonucleic acid in the CA1 stratum oriens, the part of the hippocampus stratum oriens lying in area CA1, superficial to the alveus of CA1 and deep to the pyramidal cell layer of CA1. It is continuous with the stratum oriens of CA2 and bounded by the subiculum. Ribonucleic acid is a high molecular weight, linear polymer composed of nucleotides containing ribose and linked by phosphodiester bonds. CMO:0004106 Trait.ontology