The development of serum proteins in pig foetuses during prenatal period

The present work describes data dealing with the quantitative relationship between individual serum proteins in pig foetuses of different age (38–112 days). Using immuncelectrophoresis in agar gel, six different fractions were determined (prealbumin, albumin, fetuin, alpha_1-, alpha_2-, and beta globulin). No gamma globulin was found. Using a simple radial immunodiffusion method, an average level of 70 gamma/ml of IgG was found in 112-day-old foetuses. Neither IgM nor IgA could be detected.