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cr uuu---uuuuu |
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220105s2021 xx |||||o 00| ||eng c |
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|a 10.1016/j.asd.2021.101101
|2 doi
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|a /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001573.pica
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|a (DE-627)ELV055788505
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|a (ELSEVIER)S1467-8039(21)00075-X
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|c DE-627
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|a eng
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|a Nutz, Benedikt
|e verfasserin
|4 aut
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| 245 |
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|a The epidermis cells of mandible teeth in the terrestrial isopod Porcellio scaber: Differentiations for mineralisation with calcium phosphate and carbonate
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| 264 |
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|c 2021transfer abstract
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|a nicht spezifiziert
|b zzz
|2 rdacontent
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|a nicht spezifiziert
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|2 rdacarrier
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|a Generally, the mineralisation of the crustacean cuticle occurs when the cuticle has expanded after moulting. However, in the partes incisivae of Porcellio scaber , cuticle mineralisation with calcium phosphate already occurs before the moult. We investigated the ultrastructure and distribution of organelles within the epidermis cells and searched for calcium-containing organelles using EDX and EFTEM analysis. We found two different cell types. Calcium carbonate-secreting C-cells, which resemble the epithelial cells of the general integument, and the P-cells, which, as an unusual feature, have cell extensions up to 400 μm long. During secretion of the partes incisivae, these extensions end at the unmineralised tip and the phosphate-containing middle region. Their cell bodies contain most of the mitochondria located in basal folds and a high amount of endoplasmic reticulum. The cell extensions contain many microtubules, endoplasmic reticulum, large and small vesicles and densely stained rod-shaped cisternae. The rod-shaped cisternae and the endoplasmic reticulum contain calcium. During cuticle mineralisation, vesicles, which probably belong to the endo-lysosomal system, contain calcium and phosphorus. They occur at some distance and close to the cuticle. The mineral in these vesicles has a similar composition to that within the cuticle, suggesting that they play a role in cuticle mineralisation.
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| 520 |
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|a Generally, the mineralisation of the crustacean cuticle occurs when the cuticle has expanded after moulting. However, in the partes incisivae of Porcellio scaber , cuticle mineralisation with calcium phosphate already occurs before the moult. We investigated the ultrastructure and distribution of organelles within the epidermis cells and searched for calcium-containing organelles using EDX and EFTEM analysis. We found two different cell types. Calcium carbonate-secreting C-cells, which resemble the epithelial cells of the general integument, and the P-cells, which, as an unusual feature, have cell extensions up to 400 μm long. During secretion of the partes incisivae, these extensions end at the unmineralised tip and the phosphate-containing middle region. Their cell bodies contain most of the mitochondria located in basal folds and a high amount of endoplasmic reticulum. The cell extensions contain many microtubules, endoplasmic reticulum, large and small vesicles and densely stained rod-shaped cisternae. The rod-shaped cisternae and the endoplasmic reticulum contain calcium. During cuticle mineralisation, vesicles, which probably belong to the endo-lysosomal system, contain calcium and phosphorus. They occur at some distance and close to the cuticle. The mineral in these vesicles has a similar composition to that within the cuticle, suggesting that they play a role in cuticle mineralisation.
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| 650 |
|
7 |
|a Cell calcium transport
|2 Elsevier
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| 650 |
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7 |
|a Crustacea
|2 Elsevier
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| 650 |
|
7 |
|a Partes incisivae
|2 Elsevier
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| 650 |
|
7 |
|a Calcium carbonate
|2 Elsevier
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| 650 |
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7 |
|a Mandibles
|2 Elsevier
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| 650 |
|
7 |
|a Calcium phosphate
|2 Elsevier
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| 700 |
1 |
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|a Rupp, Ulrich
|4 oth
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| 700 |
1 |
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|a Walther, Paul
|4 oth
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| 700 |
1 |
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|a Ziegler, Andreas
|4 oth
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| 773 |
0 |
8 |
|i Enthalten in
|n Elsevier Science
|t Ventricular Restraint Improves Outcomes in HF Patients with CRT
|d 2011
|g Amsterdam [u.a.]
|w (DE-627)ELV015921530
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| 773 |
1 |
8 |
|g volume:65
|g year:2021
|g pages:0
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| 856 |
4 |
0 |
|u https://doi.org/10.1016/j.asd.2021.101101
|3 Volltext
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