Table 1 AP activity (nkat/mg. protein) and Percentage of PLAP in neutrophils of pregnant women pregnant or not and bearing either trisomy 21 fetus or normal fetus.

AP activity

% PLAP

AP activity

% PLAP

AP activity

% PLAP

0.065 +/- 0.008

27

1.85 +/- 0.15

5

1.28 +/- 0.12

67

0.112 +/- 0.010

5

1.35 +/- 0.10

21

0.91 +/- 0.15

62

0.086 +/- 0.012

25

2.74 +/- 0.31

13

1.44 +/- 0.13

78

0.048 +/- 0.011

30

2.05 +/- 0.25

14

1.17 +/- 0.10

68

0.150 +/- 0.014

1

1.49 +/- 0.20

22

1.09 +/- 0.14

71

0.345 +/- 0.019

0

1.68 +/- 0.12

8

1.19 +/- 0.10

72

0.097 +/- 0.015

21

1.91 +/- 0.08

15

1.35 +/- 0.14

63

0.212 +/- 0.014

0

2.01 +/- 0.11

9

0.95 +/- 0.15

69

0.320 +/- 0.020

8

1.52 +/- 0.09

22

1.26 +/- 0.08

82