basal disc

basal disc

[′bā·səl ′disk]
(biology)
The expanded basal portion of the stalk of certain sessile organisms, used for attachment to the substrate.
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The pastry was slightly overdone so it was at least crisp but an overflow of filling had been burnt black in the oven, creating a crunchy black basal disc.
These cells remain in the attached, now basal, end of the metamorphosing animal [ILLUSTRATION FOR FIGURE 18 OMITTED]; where the upright portion of the pawn connects to the basal disc is a sharp demarcation between presence of interstitial cells in the base and absence of these cells above the base.
In the attachment area (basal disc) a few interstitial cells are found in both the ectoderm and the endoderm.
These cells are confined to the substrate-attached basal disc region of the metamorphosing animal and resemble the pattern described for the disc stage (Table I).
In the pawn a few ganglion cells differentiate in the basal disc (Table I).
Basal discs or basal plates also showed potential to be an efficient explant for onion transformation and in vitro regeneration cultures in this study.