A: Six pairs of filament groups, and more apparent blood vessels on surface of spheroid external yolk sac (dorsal view). B: Developing yolk stalk, eye, and fins (lateral view). C: The magnified head and gill filaments (ventral view). The key feature for stage 4 was gill filament development. See S4 File for original photographs of Fig 4 illustrations.</p
<p>(<b>A</b>) Fragment of a young embryo (cross section; blastoderm stage) developing inside a termi...
A: Embryo with curled body inside the egg case. B: Embryo facing the flat end of the egg case. C: Em...
<p>(A) Spawned egg. (B) There is no lipid in the immediate vicinity of the nucleus. (C) 2-cell stage...
A: Position of placoid denticles, caudal denticles and banded patterns on the body (dorsal view). B:...
A: Position of placoid denticles and banded patterns on the body (dorsal view). B: Fully developed e...
The internal ellipsoid egg yolk and blastodisc visible at stage 1 of development. The egg case membr...
A: The ellipsoid egg yolk mass and the associated embryo to scale. B: The magnified embryo with indi...
Stage 1 was characterized by no visible embryo. Stage 2 was identified as an early embryo formed on ...
A: The egg yolk mass and the associated embryo to scale. B: The magnified embryo with indication of ...
A: Position of placoid denticles and caudal denticles (dorsal view). B: Body shape began to resemble...
Total body length (cm, green, Y = 0.6416X − 1.674, R2 = 0.9898, r = 0.9949) and total external yolk ...
Comparison of 7 developmental stages inside the egg case from S. stellaris and S. canicula.</p
Embryological stages of oviparous elasmobranch during development can be difficult to identify, requ...
Embryological stages of oviparous elasmobranch during development can be difficult to identify, requ...
<p><b>A:</b> schema of the structures. <b>B:</b> embryo and extraembryonic vessels made accessible b...
<p>(<b>A</b>) Fragment of a young embryo (cross section; blastoderm stage) developing inside a termi...
A: Embryo with curled body inside the egg case. B: Embryo facing the flat end of the egg case. C: Em...
<p>(A) Spawned egg. (B) There is no lipid in the immediate vicinity of the nucleus. (C) 2-cell stage...
A: Position of placoid denticles, caudal denticles and banded patterns on the body (dorsal view). B:...
A: Position of placoid denticles and banded patterns on the body (dorsal view). B: Fully developed e...
The internal ellipsoid egg yolk and blastodisc visible at stage 1 of development. The egg case membr...
A: The ellipsoid egg yolk mass and the associated embryo to scale. B: The magnified embryo with indi...
Stage 1 was characterized by no visible embryo. Stage 2 was identified as an early embryo formed on ...
A: The egg yolk mass and the associated embryo to scale. B: The magnified embryo with indication of ...
A: Position of placoid denticles and caudal denticles (dorsal view). B: Body shape began to resemble...
Total body length (cm, green, Y = 0.6416X − 1.674, R2 = 0.9898, r = 0.9949) and total external yolk ...
Comparison of 7 developmental stages inside the egg case from S. stellaris and S. canicula.</p
Embryological stages of oviparous elasmobranch during development can be difficult to identify, requ...
Embryological stages of oviparous elasmobranch during development can be difficult to identify, requ...
<p><b>A:</b> schema of the structures. <b>B:</b> embryo and extraembryonic vessels made accessible b...
<p>(<b>A</b>) Fragment of a young embryo (cross section; blastoderm stage) developing inside a termi...
A: Embryo with curled body inside the egg case. B: Embryo facing the flat end of the egg case. C: Em...
<p>(A) Spawned egg. (B) There is no lipid in the immediate vicinity of the nucleus. (C) 2-cell stage...