Explain the purpose of tamoxifen in breast cancer treatment
What will be an ideal response
Tamoxifen binds to estrogen receptors and inhibits estrogen-mediated tumor growth. Breast cancer cells that are well-differentiated and ER+ (estrogen receptor positive) will regress under tamoxifen, whereas the drug is ineffective against poorly-differentiated ER- tumors. Biopsy specimens are routinely tested for ER status to inform therapy. Recent studies have also shown benefit to patients taking tamoxifen for "pre-invasive" conditions such as DCIS (ductal carcinoma in situ) which are often the best-differentiated and more ER sensitive tumor cells of all.
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Structures that connect lymphatic capillary cells to surrounding tissue and prevent the capillaries from collapsing are called _________ filaments
Fill in the blank with correct word.
Tapeworms are round
Indicate whether the statement is true or false
The indicators that are essential for human life include all of the following EXCEPT ________.
A. coloring B. heart rate C. respirations D. temperature
The period of sexual and physical maturation is (the)
A) infancy. B) childhood. C) senescence. D) adolescence. E) neonatal period