The lack of truly normal breast expression data, except for data from one normal tissue coming from a breast with cancer [20] required the use of other normal, especially epithelial tissues for subtractive comparison, contained in six datasets in LevelsDB.
Expression data, up- and down- regulation were defined using normal breast expression comparison, with a |2-fold| threshold [ 3].
It would be an enormously challenging task to evaluate the influence of different expression cessation or auxiliary function of breast expression upon breastfeeding.
The classification models obtained by MDR from the lung, prostate, lymphoma and breast expression data contain five, six, three and eight predictor genes, respectively.
Thus, in the breast, expression of ALDH1 is considered to be a marker of both normal and malignant stem and progenitor cells (Ginestier et al, 2007).
Keywords used were: milk expression, breast milk expression, breast milk pumping, prevalence, outcomes, statistics and data.
Databases (Medline, CINAHL, JSTOR, ProQuest Central, PsycINFO, PubMed and the Cochrane library) were searched using the keywords milk expression, breast milk expression, breast milk pumping, prevalence, outcomes, statistics and data, with no limit on year of publication.
Infant formula supplementation, in addition to early breast milk expression, are indicators of early breastfeeding problems [ 35].
In breast cancer expression of KLK6 at physiological levels has tumor-suppressor properties, while over-expression results in tumor promotion [18].
Given these inconsistent evidences regarding breast milk expression and breastfeeding outcomes, we were interested to know the prevalence of breast milk expression in mothers who gave birth to healthy term infants in Shanghai, China.
