Figure 2. Median concentrations of total protein (A) and serum albumin (B) from 10 infants determined at each month of age (closed circles). Error bars indicate the 25% and 75% quantiles. The curves (solid lines) were deduced by regression analysis of median concentrations of protein (r² = 0.88) and albumin (r² = 0.93) vs. age, respectively. Arrows indicate first tooth emergence of each respective infant.