gigantocellular part of magnocellular preoptic nucleus
gill filament +
granular layer corpus cerebelli
granular layer valvula cerebelli
hair root sheath +
hair root sheath matrix
heterogeneous tissue +
hypochord
inner fin tissue
intermediate cell mass of mesoderm
internal cellular layer
interstitial fluid +
intervillus pockets +
lamina +
late distal segment
lateral line +
lateral line primordium +
lens cortex
lens vesicle +
limiting layer of elasmoid scale
lower oral valve
macula +
matrix-based tissue
mesenchyme +
Portion of tissue composed of mesenchymal cells (motile cells that develop from epthelia via an epithelial to mesenchymal transition) and surrounding extracellular material. Mesenchyme has different embryological origins in different metazoan taxa - in many invertebrates it derives in whole or part from ectoderm. In vertebrates it derives largely from mesoderm, and sometimes the terms are used interchangeably, e.g. lateral plate mesoderm/mesenchyme.