Portion of tissue consisting of loosely organized undifferentiated mesodermal cells that give rise to such structures as connective tissues, blood, lymphatics, bone, and cartilage.
hog:0000261 intermediate mesenchyme
hog:0000019 septum transversumhog:0000086 prechordal platehog:0000268 facio-acoustic neural cresthog:0000269 trigeminal neural cresthog:0001208 vagal neural cresthog:0001209 facial neural crestBFO:0000050 part of
hog:0001766
tao:0000393