Related Experiment Video
Updated: Aug 16, 2026

Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats
Published on: October 16, 2010
Demographic variation in cancer in relation to industrial and environmental influence
Abstract:
Mortality data (183,064 deaths in a 30-year period, 1940-1969) by sex and three ethnic groups (white excluding Spanish-surnamed, nonwhite, and Spanish-surnamed) in 15 regions within the city (Houston), grouped around the air pollution sample collection stations have been analyzed. Valid contrast studies were possible in only one region within the city for all three groups and in six regions for white excluding Spanish-surnamed and nonwhite. There is evidence that the environmental factors of exposure over time to air and industrial pollutants in Houston has had a demonstrable effect in increasing regional mortality from cancer of the respiratory tract as well as from all other diseases and conditions of the respiratory tract and heart disease. This study points out the need for mutually sustained collaboration of effort of the scientific and industrial communities to redirect their attention and research efforts to the exploration of the carcinogenic potential of the microchemical environment.
Related Concept Videos
Cancers Originate from Somatic Mutations in a Single Cell
Cancer Prevention
Some...
Cancers Originate from Somatic Mutations in a Single Cell
Criteria for Causality: Bradford Hill Criteria - II
Statistical Methods for Analyzing Epidemiological Data
Cancer Survival Analysis

