Horse Serum: A Comprehensive Analysis of Key Reagents and Applications in Cell Culture

In laboratory cell culture rooms, researchers frequently discuss Fetal Bovine Serum (FBS), regarded as the "gold standard" for cell culture. However, another serum is equally important yet frequently overlooked: Horse Serum.

As a cost-effective and reliable alternative to fetal bovine serum, horse serum delivers unique merits for specific cell culture applications. It features obvious cost advantages, alongside outstanding performance in supporting proliferation and differentiation of certain specialized cell lines.

I. Overview and Characteristics of Horse Serum

Horse Serum is obtained from the whole blood of healthy equine animals. Its manufacturing workflow generally includes blood collection from horses, pooled blending, aliquot preparation, and final sterile filtration with a 0.1μm microporous membrane filter.

As a complex biological mixture, horse serum contains abundant components including plasma proteins, polypeptides, lipids, carbohydrates, growth factors, hormones, and inorganic substances.

These ingredients maintain physiological balance between cell proliferation promotion and growth inhibition. The composition and content of serum vary significantly depending on the donor horse’s gender, age, physiological status and nutritional conditions.

Distinct compositional differences exist between horse serum and fetal bovine serum. Horse serum has lower levels of immunoglobulins and overall serum protein concentration.

Such differences grant horse serum superior performance in particular experimental scenarios, especially for neuronal cell culture and multiple cell differentiation studies.

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