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Fig. 2. Expression of Xenopus claudin-4L1, -4L2, and -7L1 genes in gastrula embryos. (a–c) Vegetal view of midgastrulae. (d,e) An animal pole area of sagittal section of early gastrula (-4L1) in bright field (d) and DAPI staining (e). The blastocoel was collapsed in this section. Sagittal hemisections of early gastrulae (f–h) or late gastrulae (i–k). (l–n) Enlargement of upper part of the archenteron of i–k, respectively. ac, archenteron; bc, blastocoel; el, epithelial layer of ectoderm; sl, sensorial layer of ectoderm; arrowhead, blastopore; small arrows in f–h, mesodermal expression; large arrows in l–n, expression in the archenteron roof; dotted line in i–k indicates the blastocoel. Developmental stages (st.) are shown above each column of pictures. |
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Display additional annotations [+]
Gene |
Clone |
Species |
Stages |
Anatomy |
cldn6.1
|
|
laevis
|
NF stage 13
to
NF stage 21
|
neural groove
,
neural plate
|
cldn6.1
|
|
laevis
|
NF stage 13
to
NF stage 44
|
otic vesicle
,
endoderm
,
otic placode
,
pronephric mesenchyme
,
branchial arch skeleton
,
[+]
|
cldn7
|
|
laevis
|
NF stage 13
to
NF stage 21
|
ectoderm
,
epidermis outer layer
,
neural groove
,
sensorial layer
,
epithelium
|
|
|
Fig. 3. Expression of Xenopus claudin-4L1, -4L2, and -7L1 genes in neurula to early tailbud stage embryos. (a–c) early neurula. (d–i) midneurula. (j–o) late neurula. (p–r) tailbud stage embryo. (a–l) dorsal view. Anterior is up. (m–r) lateral view. Anterior to the left. br, Branchial arch; ng, neural groove; op, otic placode; ov, otic vesicle; pn, pronephros. |
|
Display additional annotations [+]
Gene |
Clone |
Species |
Stages |
Anatomy |
cldn6.1
|
|
laevis
|
NF stage 15
to
NF stage 18
|
ectoderm
,
neural groove
,
sensorial layer
,
epithelium
|
cldn6.1
|
|
laevis
|
NF stage 21
|
epidermis
,
endoderm
,
sensorial layer
|
cldn7
|
|
laevis
|
NF stage 15
to
NF stage 21
|
ectoderm
,
epidermis
,
neural groove
,
sensorial layer
,
epithelium
|
cldn7
|
|
laevis
|
NF stage 21
|
epidermis
,
sensorial layer
,
epithelium
|
|
|
Fig. 4. Expression of Xenopus claudin genes examined by transverse sections of embryos. Expression of either Claudin-4L1 or -4L2 was shown, because Claudin-4L1 and -4L2 showed similar expression patterns. (a) claudin-4L1 at stage 15. (b) claudin-4L2 at stage 17/18. (c) claudin-4L2 at stage 21. (e–g) claudin-7L1 at stage 15 (e), stage 17/18 (f), and stage 21 (g). (d,h) Enlargement of the ventral region of c and g, respectively. Dorsal is up. Upper panels, bright field; lower panels, DAPI staining. el, epithelial layer of epidermal ectoderm; end, endoderm; sl, sensorial layer of epidermal ectoderm. |