develops_from adjacent_to lung bud BTO:0001643 EHDAA2:0004089 Structure derived from foregut that becomes a lung[GO]. UBERON:0000118 UMLS:C1514420 UMLS:C1514897 clarify successors - include bronchi? gemma pulmonalis gemma respiratoria lung bud primary lung bud respiratory diverticulum uberon splanchnic layer of lateral plate mesoderm epithelial bud lung primordium endo-epithelium respiratory primordium