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Fig. 36. Observation of the eggs after non-treatment (A and D), tannic acid treatment (B and E) and kaolin treatment (C and F). The upper and lower halves show eggs on November 21, 2003 and March 23, 2004, respectively. The arrowheads indicate borderline between the egg membrane and the inverted adhesive membrane. Scale bar indicates 1.00 mm. Reprinted from Aquaculture, 242, Mizuno et al., Elimination of adhesiveness in the eggs of shishamo smelt Spirinchus lanceolatus using kaolin treatment to achieve high hatching rate in an environment with a high iron concentration, 713–726, © 2004, with permission from Elsevier.

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