Blood, 1959, Vol. 14, No. 9, pp. 1033-1039.
© 1959 American Society of Hematology, Inc.
The Relationship of Age, Strain and Species to the
Reducing Activity of Leukocytes
ALBINA ANN YAKAITIS 1
1 Detroit Institute of Cancer Research, Detroit, Mich.
A method is presented for studying the reducing activity of leukocytes of
mice and rats using 2-(p-iodophenyl)-3-)p-nitrophenyl)-5-phenyltetrazolium
chloride (INT).
Between 48.0 per cent and 83.8 per cent of the leukocytes of young adult
mice and between 47.8 per cent and 68.0 per cent of the leukocytes of young
rats showed formazan formation.
Infant mice of C3Hf and BALBf strains had appreciably fewer leukocytes
with the ability to reduce tetrazolium than did young adults of their respective
strains.
Healthy adult mice belonging to the leukemia susceptible AKR strain showed
a relatively high degree of leukocytic reduction.
Old mice of the C3Hfstrain showed less formazan formation than young
adult animals. This decrease was more marked for the male members of the
species.
Submitted on October 15, 1958
Accepted on January 12, 1959