The Gemara mainly focuses on elucidating and elaborating the opinions of the Tannaim. Their main theorization involved elucidating the stages of development of moral reasoning capacity. Model organisms have been most useful for elucidating the broad nature of developmental mechanisms. Goljan is well known for elucidating ideas of pathophysiology as well as for his humor. Elucidating complex signaling pathway phosphorylation events can be difficult. There exists a wide range of commentaries explaining and elucidating those verses consisting of metaphor. Simons devotes considerable effort to elucidating historical notations. There exists no theory elucidating correlations among -amino acids. Several studies have focused on elucidating the impact of DNA motifs in promoter-enhancer interactions. Solid state NMR spectroscopy has been very useful in elucidating the structure of amorphous solids. It is not concerned with evangelising but with elucidating understanding, or meaning. "Genotyping" is the process of elucidating the genotype of an individual with a biological assay. The Zeeman effect thus became an important tool for elucidating the structure of the atom. Many contemporary gurus and experts have written extensive commentaries elucidating the Lojong text and slogans. Joseph E. LeDoux has been instrumental in elucidating the amygdala's role in fear conditioning.