| Literature DB >> 14052976 |
Abstract
By employing a clone of L strain mouse fibroblasts (L(E)) which does not exhibit cell clumping and lysis (cytolytic antibody reaction), it was possible to screen for the presence of growth-regulating factors in human sera and effusions, exclusive of an antigen-antibody reaction. Under conditions of the test a mitotic index greater than 20% indicated the presence of a growth-promoting factor.A total of 11 pleural effusions was tested. Four of the eight malignant effusions possessed a growth-promoting factor, while none of the three non-malignant effusions or the one sample of human umbilical cord serum possessed such a factor. Overnight storage of the unfiltered effusions at 5 degrees C. resulted in complete loss of the growthpromoting activity.Entities:
Keywords: CELL DIVISION; COLCHICINE; CYTODIAGNOSIS; EXPERIMENTAL LAB STUDY; EXUDATES AND TRANSUDATES; MICE; NEOPLASM DIAGNOSIS; NEOPLASM IMMUNOLOGY; PLEURAL EFFUSION; TISSUE CULTURE
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Year: 1963 PMID: 14052976 PMCID: PMC1921851
Source DB: PubMed Journal: Can Med Assoc J ISSN: 0008-4409 Impact factor: 8.262