Tissue culture medium
First Claim
1. A process for producing a growth factor containing serum having a γ
- -globulin content of between about 0.1-1.0 g/dl, and of 50-100 mg/dl of cholesterol comprising the steps of;
(a) adding ammonium sulfate to natural bovine serum to 15-30% saturation to give a first solids fraction and a first supernatant;
(b) separating said first solids fraction from said first supernatant;
(c) adding ammonium sulfate to said first supernatant to 35-45% saturation to give a second solids fraction and a second supernatant;
(d) separating said second solids fraction from said second supernatant;
(e) combining said first solids fraction and said second supernatant; and
(f) desalinating said first solids fraction and said second supernatant, either before or after said combining.
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Abstract
A growth factor containing serum is disclosed which is derived from natural bovine serum is disclosed which is by precipitating a first solids fraction from natural bovine serum by adding ammonium sulfate to about 25% saturation to give a first solids fraction and a first supernatant; separating the first solids fraction from the first supernatant; precipitating a second solids fractions from the first supernatant by adding ammonium sulfate to about 40% saturation to give a second solids fraction and a second supernatant; separating the second solids fraction from the second supernatant; combining the first solids fraction and the second supernatant; and desalinating the first solids fraction and the second supernatant, either before or after combination thereof.
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Citations
9 Claims
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1. A process for producing a growth factor containing serum having a γ
- -globulin content of between about 0.1-1.0 g/dl, and of 50-100 mg/dl of cholesterol comprising the steps of;
(a) adding ammonium sulfate to natural bovine serum to 15-30% saturation to give a first solids fraction and a first supernatant; (b) separating said first solids fraction from said first supernatant; (c) adding ammonium sulfate to said first supernatant to 35-45% saturation to give a second solids fraction and a second supernatant; (d) separating said second solids fraction from said second supernatant; (e) combining said first solids fraction and said second supernatant; and (f) desalinating said first solids fraction and said second supernatant, either before or after said combining. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- -globulin content of between about 0.1-1.0 g/dl, and of 50-100 mg/dl of cholesterol comprising the steps of;
Specification