Urechis

Jo, H. Y., Jung, W. K., and Kim, S. K. (2008). Purification and characterization of a novel anticoagulant peptide from marine echiuroid worm, Urechis unicinctus. Process Biochem. 43,179-184. 

Toomey, B.H. and D. Epel. Multixenobiotic resistance in Urechis caupo embryos protection from environmental toxins. Biol. Bull. 185 355-364, 1993. 

Das, N. K., and M. Alfert. 1968. Cytochemical studies on concurrent synthesis of DNA and histones in primary spermatocytes of Urechis canpo. Exp. Cell Res., 49 51-58. 

Gould, M. C. 1968. Completion of the first meiotic division after fertilization in Urechis caupo eggs despite inhibition of protein synthesis. J. Cell Biol., 38 220-224. 

Luykx, P. 1965a. The structure of the kinetochore in meiosis and mitosis in Urechis eggs. Exp. CeU Res., 39 643-657. 

Pease, D. C. 1941. Hydrostatic pressure effects upon the spindle fiber and chromosome movement. I. Experiments on the first meiotic division of Urechis eggs. J. Morph., 69 405 41. 

The erythrocytes were washed four times with cold 0.9% NaCl with the exception of Pimelometopon and Cephaloscyllium cells, which were washed with 1.2% NaCl. The red cells from hagfish were washed with chilled 3% NaCl and the coelomic cells of Urechis with 3.2% NaCl. Washing with 0.9% NaCl led to considerable hemolysis in the case of the fresh water fish Dipneust. 

The washed cells were hemolyzed in a standard fashion with distilled water and toluene with the exception of Urechis, where ether was used instead of toluene. The washed red cells of hagfish were stored for one day at 4°C before lysing. A major portion of the hemoglobin obtained was insoluble possibly due to acidifica-... 

Kerr MS (1969) The hemolymph proteins of the blue crab, Callinectes sapidus. II. A lipoprotein serologically identical to oocyte lipovitellin. Dev Biol 20 1-17 Laufer H, Borst D, Baker FC, Carrasco C, Sinkus M, Reuter C, Tsai LW, Schooley DA (1987) The identification of a juvenile hormone-like compound in a crustacean. Science 235 202-205 Lawrence AL, Lawrence JM, Giese AC (1971) Carbohydrate and lipid levels in the blood of Urechis caupo (Echiura). Comp Biochem Physiol 38B 463-465 Lee RF, Puppione DL (1978) Serum lipoproteins in the spiny lobster, Panulirus interuptus. Comp Biochem Phys 59B 239-243... 

Echiurida Urechis caupo RNA-DNA hybridization Brown and Dawid (1968),... 

When Urechis respires, the Po, of the water in its intestine is 100mm when the of the outside water is 150mm. 

Similar anthraquinones have also been isolated from the echiuran Urechis unicintus (Chang et al, 1998). 

Gould, M. C. (1965). RNA and protein synthesis in Urechis caupo oocytes. Am. Zoologist 5, 635. 

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