Biology Research Essay Example | Topics and Well Written Essays - 1500 words

Biology Research - Essay Example Basal like tumors are most commonly found in Nigeria and Senegal. Research is on to find drugs to block the specific molecules that these tumors need to grow. Women with mutations in a gene called Brca1 tend to develop this kind of aggressive breast tumor. Patterns of genetic activity of these tumors are measured through special tests because what the biological tests reveal turn out to be quite different from what the human eyes perceive. Researchers used new techniques of molecular biology to determine the patterns of gene activity in the cancer cells and then to classify and sort the subtypes by race. Further research is on to find an alternative to chemotherapy. Women of race are advised to get counseling in preventive care well before 40 especially if it runs in their family. As the incidence of breast cancer and mortality due to breast cancer keeps increasing in the USA, researchers and oncologists have been intrigued trying to find the root cause of breast cancer. While various physiological reasons have been associated, recent findings suggest that environmental factors react with genetic and individual predisposing factors and cause malignant tumors to develop in breast tissue. A paper Breast cancer and environmental risks: where is the link? by Mitra et al., (2004) was published in Journal of Environmental Health. To asses the environmental agents, the authors have reviewed previous studies focusing on xenoestrogens, organochlorines, polychlorinated biphenyls, and other environmental agents. Results revealed that exogenous estrogens present in the environment increase the growth of breast cancer cells while hormone replacement therapy (HRT) and oral contraceptives also play a significant role in the development of breast cancer during adolescence. X enoestrogens may increase the risk of cancer among those who are