Mineralization of Nacre-like Structures Mediated by Extrapallial Fluid on Pearl Nucleus

2017 ◽  
Vol 18 (1) ◽  
pp. 32-36 ◽  
Author(s):  
Chuang Liu ◽  
Guangrui Xu ◽  
Jinzhe Du ◽  
Juan Sun ◽  
Xiang Wan ◽  
...  
Keyword(s):  
Extrapallial Fluid

scholarly journals Biochemical Studies on Extrapallial Fluid of Shell-Fish Part I

1968 ◽  
Vol 42 (9) ◽  
pp. 553-557
Author(s):  
Tadashi ISHIHARA ◽  
Masato YASUDA
Keyword(s):  
Biochemical Studies ◽  
Extrapallial Fluid

Transformation of amorphous calcium carbonate nanoparticles into aragonite controlled by ACCBP

CrystEngComm ◽  
2016 ◽  
Vol 18 (12) ◽  
pp. 2125-2134 ◽  
Author(s):  
Jingtan Su ◽  
Fangjie Zhu ◽  
Guiyou Zhang ◽  
Hongzhong Wang ◽  
Liping Xie ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Binding Protein ◽  
Pearl Oyster ◽  
Amorphous Calcium Carbonate ◽  
Polymorph Selection ◽  
The Matrix ◽  
Extrapallial Fluid

Polymorph switching of calcium carbonate controlled by amorphous calcium carbonate-binding protein, an extrapallial fluid (EPF) protein from the pearl oyster, is investigated. The polymorph selection in nacre or pearl growth may be controlled not only by the nucleating template on the matrix but also by the physicochemical effects of EPF proteins.

scholarly journals Biochemical Studies on Extrapallial Fluid of Shell-Fish (Part II)

1970 ◽  
Vol 23 (3) ◽  
pp. 164-168
Author(s):  
Tadashi Ishihara ◽  
Masato Yasuda ◽  
Ken-ichi Komoto
Keyword(s):  
Biochemical Studies ◽  
Extrapallial Fluid

A histochemical study of the development of the mantle-edge and shell in the freshwater gastropod, Helisoma duryi eudiscus (Pilsbry)

1968 ◽  
Vol 46 (3) ◽  
pp. 481-491 ◽  
Author(s):  
S. P. Kapur ◽  
M. A. Gibson
Keyword(s):  
Alkaline Phosphatase ◽  
Ribonucleic Acid ◽  
Ground Substance ◽  
Freshwater Gastropod ◽  
Helisoma Duryi ◽  
Yellow Body ◽  
Golgi Element ◽  
Mantle Edge ◽  
Extrapallial Fluid ◽  
Distal Border

Glycogen and ribonucleic acid are present in the mantle-edge during the prehatching period and in the adult. The cubocolumnar epithelium contains the largest stores of glycogen. Ribonucleic acid is most abundant in the mantle-edge gland, and the mucous and mucoprotein cells. Mucopolysaccharides and glycoproteins occur within the mantle-edge epithelium, excepting the mantle-edge gland, and within the shell ground substance. Mucous glands and the sheath surrounding the organic plates are rich in sulfated mucopolysaccharides. Alkaline phosphatase and calcium could not be demonstrated during the prehatching stages. In the adult, alkaline phosphatase reactions are intense along the distal border of the cubocolumnar epithelium, and the basal borders of the epithelia of the mantle-edge gland, median lobe, and ventral lobe. Calcium carbonate occurs as spherules in the connective tissue, in the extrapallial fluid, and within the organic plates and crystalline layers of the shell. In the adult, lipids are most plentiful in the dorsal lobe epithelium and yellow body cells. Vitamin A occurs only within the cubocolumnar and yellow body cells. Cytochrome oxidase is present within the mantle-edge epithelium and, in terms of relative amounts, reflects the activity of the various lobes. Similarly, the size of the Golgi element can be correlated with the activity of the mantle-edge epithelia.

Constituents of unionid extrapallial fluid. ii ph and metal ion composition

Hydrobiologia ◽  
1976 ◽  
Vol 50 (1) ◽  
pp. 89-93 ◽  
Author(s):  
James E. Pietrzak ◽  
John M. Bates ◽  
Ronald M. Scott
Keyword(s):  
Metal Ion ◽  
Ion Composition ◽  
Extrapallial Fluid
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