Primary germ layer that is the middle of the embryo's germ layers.
hog:0001223
hog:0000087 intermediate mesodermhog:0000107 axial mesodermhog:0000114 paraxial mesodermhog:0000118 lateral plate mesodermhog:0001482 fibroblastBFO:0000050 part of
hog:0001766
tao:0000041tao:0001377