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    • 7. 发明授权
    • Determining potency of streptococcal preparations
    • 测定链球菌制剂的效力
    • US4529581A
    • 1985-07-16
    • US454906
    • 1982-12-30
    • Karen K. BrownSharon A. Bryant
    • Karen K. BrownSharon A. Bryant
    • G01N33/569A61K49/00G01N33/48G01N33/54
    • G01N33/56944
    • Antigenicity of streptococcal preparations useful for inducing anti-streptococcal immunity in animals can be determined using a combining power technique. Method involves incubating serial dilutions of the antigen preparation with known amounts of anti-streptococcal antiserum, thereby lessening, in serial manner, the combining power of the antiserum. The serial reaction products are then incubated with serial dilutions of streptococcal preparations having known activity and the effects of the serial reaction products on such activity are then determined by in vivo means. Those determinations can be related to a standard for determining potency of the streptococcal preparation. Assay technique is especially useful in determining potency of Streptococcus equi bacterins or bacterin derivatives.
    • 用于诱导动物中抗链球菌免疫的链球菌制剂的抗原性可以使用组合功能技术来确定。 方法包括用已知量的抗链球菌抗血清孵育抗原制剂的系列稀释液,从而以一致的方式减少抗血清的结合力。 然后将连续反应产物与具有已知活性的链球菌制剂的系列稀释液一起温育,然后通过体内方法测定连续反应产物对这种活性的影响。 这些测定可以与确定链球菌制剂效力的标准相关。 测定技术在确定马链球菌或菌苗衍生物的效力方面特别有用。
    • 8. 发明授权
    • Low viscosity high molecular weight filter sterilizable hyaluronic acid
    • 低粘度高分子量过滤器无菌的羟丙酸
    • US5093487A
    • 1992-03-03
    • US816548
    • 1986-01-06
    • Karen K. BrownNathan D. GreeneSandy L. TrumpSharon A. Bryant
    • Karen K. BrownNathan D. GreeneSandy L. TrumpSharon A. Bryant
    • C08B37/08
    • C08B37/0072
    • The present disclosure is concerned with procedures for adjusting the average molecular weight, the molecular weight distribution and the viscosity in solution of hyaluronic acid and its salts (HA), particularly its sodium and potassium salts. The average molecular weight can be increased and the molecular weight distribution can be narrowed by precipitating this material into a bath of a non-solvent containing a continuously moving device to which it can adhere as it precipitates. The solution viscosity of this or any high molecular weight, high viscosity HA can be reduced without substantially effecting its molecular weight by either a moderate temperature heat treatment or passage through a fine (one micron or less) pore filter as a one weight percent or stronger aqueous solution. The disclosure is also concerned with the high molecular weight low solution viscosity HA so obtained.
    • 本公开涉及调节透明质酸及其盐(HA)的溶液中的平均分子量,分子量分布和粘度的方法,特别是其钠盐和钾盐。 可以增加平均分子量并且通过将该材料沉淀到含有其沉淀时可以粘附的连续移动装置的非溶剂的浴中而使分子量分布变窄。 这种或任何高分子量,高粘度的HA的溶液粘度可以通过中等温度热处理或通过细(1微米或更小)的孔过滤器作为一重量百分比或更强而基本上不影响其分子量而降低 水溶液。 本公开还涉及如此获得的高分子量低溶液粘度HA。