Anlagen are populations of contiguous cells, typically arranged in one plane, that are morphologically indistinct, but that already correspond in extent to a later organ/tissue.
anterior ectodermal midgut
anterior swim bladder bud
avascular GAG-rich matrix +
basimandibulare
bone marrow +
brain marginal zone +
branchiostegal membrane
bulb of hair follicle +
cardiac jelly +
cerebellar crest
climbing fiber
cloacal papilla
comma-shaped body +
connective tissue +
copula linguae
core of melon organ
corneal primordium +
corpuscles of Stannius
dermal papilla +
dermal pulp of feather shaft
dermis of feather follicle
developing mesenchymal structure +
differentiated genital tubercle +
dorso-rostral cluster
dorsolateral septum
elastica externa of notochord
embryonic structure +
embryonic tissue +
endocardial ring +
epidermal intermediate stratum
epidermal placode
epidermal superficial stratum
epidermis of feather follicle +
epiphysial cluster
epithelium +
equatorial belt
erectile tissue +
external cellular layer
extraembryonic structure +
extraembryonic tissue +
eye trabecular meshwork +
feather bud +
filum terminale +
filum terminale externum
filum terminale internum
future glans +
future tongue +
gigantocellular part of magnocellular preoptic nucleus