Table 3. Concentration of serum protein fractions in the blood of women during pregnancy.

		Albumin [g/l]	α1-globulins [g/l]	α2-globulins [g/l]	β-globulins [g/l]	γ-globulins [g/l]
1st trimester	S n = 6	50.24 ± 1.711	3.31 ± 0.75	10.88 ± 1.295,6	7.44 ± 1.74	5.94 ± 1.22 **
	NS n = 18	46.55 ± 4.502	3.47 ± 1.203,4	10.98 ± 2.287,8	7.21 ± 1.729,10	8.01 ± 1.7011,12, **
2nd trimester	S n = 7	45.89 ± 6.22	3.97 ± 0.97	12.34 ± 2.485	7.36 ± 1.82	5.23 ± 1.55***
	NS n = 35	44.95 ± 5.59	4.49 ± 1.383	12.85 ± 2.257	8.70 ± 1.369	6.49 ± 1.1311, ***
3rd trimester	S n = 10	39.53 ± 4.311	4.25 ± 1.18	15.54 ± 2.586	8.06 ± 1.01*	5.61 ± 1.23
	NS n = 31	42.57 ± 5.482	4.94 ± 1.234	14.22 ± 2.518	9.57 ± 1.7710, *	5.85 ± 1.7612

Groups–S: smoking; NS: non-smoking.

^1–12 significant (p < 0.00) for the same parameter in the same group to the other trimester (e.g. ¹S group in the 1^st trimester has higher albumin concentration than in the 2^nd trimester)

*, **, *** significant (p < 0.05) for the same parameter in the same trimester for different smoking groups (e.g. *S group in the 3^rd trimester has lower levels of β-globulins than NS group in the same trimester)