Blood, 1959, Vol. 14, No. 11, pp. 1223-1229.
© 1959 American Society of Hematology, Inc.
The Relationship of Tumor Necrosis to Red Blood Cell
Changes in the Hamster
JOSEPH D. SHERMAN 1
1 Department of Pathology, Massachusetts Memorial Hospitals, Boston, Mass.
1. Sterile, cell-free saline extracts of the necrotic portion of methylcholanthrene-induced hamster sarcoma injected into non-tumor bearing hamsters
produced a statistically significant decrease in hemoglobin, hematocrit and
red blood cell levels.
2. These changes in hemoglobin, hematocrit and red blood cells are
comparable to those observed during sarcoma growth.
3. Sterile, cell-free, extracts of viable sarcoma injected into hamsters failed
to produce alterations in the hemoglobin, hematocrit or red blood cell values.
4. The necrosis produced during sarcoma growth in the hamster cheek
pouch is concluded to be responsible for alterations in the red blood cell
counts, hemoglobin and hematocrit values.
Submitted on December 10, 1958
Accepted on January 27, 1959