part of
part_of
part of
develops_from
develops from
develops from
ends during
starts during
heart tube
heart
endocardium
endocardial tube
XAO:0000337
heart tube (xenopus)
xenopus_anatomy
heart tube
UBERON:0004141
Region in the embryo that consists of precursor cells for the development of the embryonic heart.
embryonic structure
NF stage 28
NF stage 33 and 34