Osteoclasts isolated from Shan sheldrakes were cultured with different concentrations of calcium 2, 3, 5, 7 mmolL^(-1. OCs were identified by tartrate resistant acid phosphatase staining and observed by phase-contrast microscope at 1, 3, 5, 7 d after treated by calcium.

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A viral isolate was obtained from naturally infected sheldrakes liver using free of maternal antibodies.

應用無母源抗體的鴨胚從疑似病毒性鴨肝炎的病麻鴨肝臟中分離到1株病毒一级AA免费毛片高潮软件。

To investigate the effects of serum calcium and phosphorus on the model of calcium-deficient laying ducks, one hundred and twenty Shan sheldrakes were allocated into normal diet, half calcium carbonate and quarter calcium carbonate groups randomly. Serum calcium and phosphorus were detected by automatic biochemistry analyzer one day before and one, three and five weeks after fed with above diets.

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