21 JUNE 1975

BRITISH MEDICAL JOURNAL

685

Mean Total and Differential Leucocyte Counts in Some African Populations Compared with Wintrobe's Norms Total

Source

Kampala, Hawgood' Nairobi, Kasili et al.' Lusaka,

12

Ezeilo3

Kampala, Shaper and Lewis4 Bamako, Rougemont et al.-' U.S.A., Wintrobe' Wintrobe6

Lymphocytes ( x 109/1)

Eosinophils ( x 10'/1)

Monocytes ( X 109/1)

2-20

0 56

0-27

Subjects (No.)

Leucocytes ( x 109/1)

Neutrophils ( x 109/1)

Outpatients (88) Blood donors (152) Blood donors (133) Blood donors (250) Unselected adults (555) Medical students (105)

5 30 (2 80-9 20)*

(0 80-5 05)*

(1-15-3 85)*

5 00 (2-00-10-70)t

2-11 (0 36-5-62)t

2 43 (0-81-5 45)t

0 33 (0-2 11)t

1-94

2 67

0-45

-

0-72

2-25

5 16

(2 60-7 70)t

1-96

5 10

2-10

_

(0-74-3-56)*

(0-2 26)*

2-47 099+

0-8340-74++

0 25 (0-0-55)* 0-19+0-20++

7-78±+ 1 -46++J06+ 4-30O± 1 -21$ 2-71 +0-61 ++

0-23±1 0-d17$ 02 --7

+ 0-18$ 0-50 -0±-8

(3 20-3 60)* 2-33+1-37+

(1 90-8-30)* 5 51:1180$

*950, confidence limits. tRange. +Mean + S.D. Conversion: SI to Traditional Units-W.B.C.: 1

x

10'/1 = 1000/mm3.

from A£rican countries are not rare in obtained with a Fiske osmometer are shown Europe this matter seems to be of some in the table. The P.R.A. control values, taken practical interest.-We are, etc., in the upright position, were slightly higher at 1200 hr than at 1600 hr, in accordance A. ROUGEMONT with the circadian rhythm of P.R.A.3 After M.-E. BoIsSON the run P.R.A. increased highly significantly (P