What's the difference between epibolic and epiboly?
Epibolic
Definition:
(a.) Growing or covering over; -- said of a kind of invagination. See under Invagination.
Example Sentences:
(1) The morphology and movement of the isolated cells from the PEL were examined in an attempt to elucidate the role of cell movement in epibolic extension of the PEL.
(2) Both localizations were observed in this epibolic wound healing process during 6 hr and 24 hr in culture and showed a differential sensitivity to cycloheximide (CHX).
(3) Examinations of the dissected gastrulae suggested two cooperative forces for the gastrulation: first, the epibolic or enfolding movement of the ventral ectoderm cells and secondly, the change in shape of the constituent cells.
(4) Epibolic extension of the presumptive ectodermal layer (PEL) was investigated in embryos of the newt Cynops pyrrhogaster before and during gastrulation.
(5) Present observations suggest that changes in cell shape of the PEL play an important role in the control of the epibolic extension of the newt embryos.
(6) However, E-BPA and other BMZ components were found along the dermal-epidermal junction and along only the most proximal portion of the dermal-epibolic junction.
(7) We conclude that the focused pulsed CO2 laser is capable of precisely and bloodlessly ablating skin with conservation of residual subjacent adnexal elements, minimal early interference with epibolic epithelial outgrowth, and no pathologic effects on the wound healing process.
(8) This causes narrowing of the E-YSL and initiates the epibolic expansion of the blastoderm.
(9) (1) Contact-guided cell migration through a structurally ordered extracellular matrix during fin development; (2) movement of tissue layers during epibolic overgrowth; and (3) cell 'social' behaviour during the establishment of the body axis (i.e.
(10) In attempting to characterize the properties of these two BP antigens (BPA), we have investigated the expression of E-BPA and I-BPA as well as other basement membrane zone (BMZ) components such as type IV collagen, laminin, and epidermolysis bullosa acquisita (EBA) antigen at the dermal-epibolic junction as a model system for BMZ neogenesis.
(11) Gastrulation movements include the epibolic stretching of the surface towards the blastopore and a contraction of the vegetal surface.
(12) The wound healing process of frog skin fragments in epibolic cultures has provided information on FN localizations during the migration of keratinocytes.
(13) I-BPA was found along the dermal-epidermal junction and throughout the whole length of the dermal-epibolic junction.
Epiboly
Definition:
(n.) Epibolic invagination. See under Invagination.
Example Sentences:
(1) After 1 day in vitro the explants were partly encircled by epithelium which had proliferated from the cut edges of the explant and from rete ridges near the cut edge (epiboly).
(2) RA was applied for one hour at concentrations ranging from 10(-9) to 10(-6) M to embryos at 50% epiboly, the midgastrula stage, and at 10(-7) M to embryos at early and late gastrula stages.
(3) (1) Radial cell intercalations during epiboly mix cells located deeply in the blastoderm among more superficial ones.
(4) When two deep blastomeres make contact during epiboly stages, they soon break the contact and move apart; they overlap one another only rarely.
(5) These results suggest that epiboly of the EVL may have an active component as well as a passive one.
(6) The most striking of these alterations is the persistence throughout gastrulation of a thick blastocoel roof composed of many cell layers, suggesting that there is an inhibition of posterior spreading of the roof normally associated with epiboly.
(7) Morphometric analysis shows that about half the narrowing of the margin of the EVL during epiboly is accounted for by cell rearrangement and the other half by the associated tapering and narrowing.
(8) In addition to differentiation, keratinocyte migration over the sides of the explant (epiboly) and epithelial proliferation as determined by [3H]thymidine autoradiography were reduced by culture in low calcium medium.
(9) Gastrulae at 50% epiboly exposed continuously to DFP at concentrations between 40 microM and 90 microM completed epiboly, but exhibited a dose-dependent decrease in the number of somites formed, and a parallel decrease in the caudal extent of somite innervation, by 24 hours post-fertilization (h).
(10) Studies of vitronectin on cultured keratinocytes showed that it caused spreading and epiboly but not cellular adhesion to the substratum.
(11) When epiboly of the EVL and the yolk syncytial layer (YSL) commences (stage 14), deep blastomeres clump together as a consolidation mass and then migrate outward as single cells on the YSL.
(12) Implanted skin in the cat's bulla failed to develop a pearl formation but frequently developed an epiboly, in which case the epidermis receded and was partly replaced by mucous membrane, and its stroma was heavily invaded by mucous epithelium, resembling tubular glands.
(13) Using measured pieces of mouse ear skin epithelial outgrowth about floating explants (epiboly) and from adherent explants was studied.
(14) At 100% epiboly, fluorescent cells were located in contact with the YSL within the embryo proper, with the brightest fluorescence in the future head region.
(15) The present report describes Lucifer Yellow (LY) transfer between the syncytial layer of the yolk cell (YSL) and blastodermal cells during epiboly in the teleost fish Barbus conchonius.
(16) Epiboly, involution and convergent extension in zebrafish involve the same kinds of cellular rearrangements as in amphibians, and they occur during comparable stages of embryogenesis.
(17) The domains may signal specification of morphogenesis rather than cell fate, because, shortly after they appear, each assumes a different role during epiboly, the first morphogenetic movement of the embryo.
(18) The two most reliable tests, based on the distance from each deep blastomere within a selected area to its nearest neighboring cell, indicate that the distribution pattern changes from regular during epiboly stages to random during dispersed stages 1 and 2.
(19) Early development in Cynolebias resembles that of other South American annual fishes, such as Austrofundulus, in that a phase of deep blastomere dispersion and reaggregation spatially and temporally separates epiboly from embryogenesis.
(20) The presence, location and morphology of cells containing nuage, an ultrastructural characteristic of primordial germ cells (PGCs), is described from the moment of first morphological recognition of PGC (around 100% epiboly) in embryos of the teleost fish Barbus conchonius.