Table 2: Mean (SD) total lymphocyte, natural killer cell, and CD69 counts in the study population.

First trimester Second trimester Third trimester

Total lymphocyte count (×109/L)
 Total, mean (SD) 451.93 (0.57)461.68 (0.41)421.79 (0.43)
 Caucasian, mean (SD)251.87 (0.44)251.74 (0.44)251.82 (0.47)
 Afro-Caribbean, mean (SD)201.99 (0.71)211.60 (0.45)171.74 (0.37)
NK cell count (×106/L)
 Total, mean (SD) 45232.6 (149.5)46183.4 (108.1)42166.9 (77.7)
 Caucasian, mean (SD)25230.0 (130.1)25198.7 (126.1)25171.3 (85.3)
 Afro-Caribbean, mean (SD)20236.0 (174.3)21165.1 (81.0)17160.4 (67.0)
NK cell/lymphocyte (%)
 Total, mean (SD) 4511.6 (5.8)4610.8 (4.6)429.3 (3.3)
 Caucasian, mean (SD)2512.0 (5.3)2511.0 (4.8)259.3 (3.1)
 Afro-Caribbean, mean (SD)2011.3 (6.4)2110.5 (4.6)179.2 (3.7)
CD69 count (×106/L)
 Total, mean (SD) 301.88 (1.08)302.14 (1.90)302.56 (1.42)
 Caucasian, mean (SD)152.02 (1.25)152.69 (2.48)153.07 (1.50)
 Afro-Caribbean, mean (SD)151.75 (0.89)151.59 (0.81)152.05 (1.16)
CD69/NK cell (%)
 Total, mean (SD) 301.14 (0.76)301.24 (0.72)301.82 (1.29)
 Caucasian, mean (SD)151.03 (0.65)151.45 (0.91)15 1.98 (0.94)
 Afro-Caribbean, mean (SD)15 1.25 (0.86)15 1.04 (0.39)151.67 (1.59)

NK: natural killer.