• EC: ectoderm• FG: foregut• HT: heart tube• IFT: inflow tract• LPM: lateral plate mesoderm•
LSH: left sinus venosus horn• LVV: left vitelline vein• NC: neural crest• N: notochord• NP …

The majority of animals exhibit an external bilateral symmetry. However, there are numerous
internal left–right (L/R) asymmetries, including the morphology and position of several …