Table 4. Correlations between the concentrations of total protein, serum proteins, α1-antitrypsin, α1-acid glycoprotein, α2-macroglobulin, transferrin, with the Zn/Cd ratio and cotinine, Cd, and Zn concentrations in pregnant smoking women [n = 10] in the 3rd trimester of pregnancy.

	Cotinine [ng/ml]	Cadmium [μg/l]	Zinc [μg/l]	Zn/Cd ratio
Total protein [g/l]	n/s	r = −0.903 p = 0.002	n/s	n/s
Albumin [g/l]	r = −0.788 p = 0.020	n/s	n/s	n/s
α1-globulins [g/l]	r = 0.840 p = 0.002	r = 0.672 p = 0.035	n/s	r = −0.763 p = 0.046
α2-globulins [g/l]	r = 0.741 p = 0.035	r = 0.787 p = 0.021	n/s	r = −0.764 p = 0.046
β-globulins [g/l]	n/s	n/s	r = −0.831 p = 0.041	r = −0.958 p = 0.042
γ-globulins [g/l]	n/s	n/s	n/s	n/s
α1-antitrypsin [mg/dl]	n/s	r = −0.968 p = 0.032	n/s	n/s
α1-acid glycoprotein [μg/dl]	n/s	n/s	n/s	n/s
α2-macroglobulin [g/l]	r = 0.768 p = 0.044	r = 0.835 p = 0.019	n/s	n/s
Transferrin [g/l]	r = 0.736 p = 0.024	n/s	r = −0.731 p = 0.039	n/s
Cadmium [μg/l]	r = 0.624 p = 0.040	-	r = −0.823 p = 0.023	r = −0.968 p = 0.000
Infant Birth Weight [g]	n/s	r = −0.799 p = 0.003	n/s	n/s

n/s: non-significant when p>0.05