Which is a definition of a radioresistant tumor?

a. tumor is completely eradicated by chemical therapy
b. tumor requires large doses of radiation to produce death of cells
c. Tumor in which irradiation causes death of cancer cells without damage to surrounding tissue
d. tumor is not significantly affected by drug treatment
e. tumor is resistant to surgical intervention


b. tumor requires large doses of radiation to produce death of cells

Biology & Microbiology

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Antigen-presenting cells present antigens to

A) B lymphocytes. B) T lymphocytes. C) dendritic cells. D) neutrophils.

Biology & Microbiology

The study of genomes of a particular community is called ________.

A. metabolomics B. metagenomics C. genomics D. proteomics E. genomology

Biology & Microbiology

An infectious protein is a

virus. viroid. prion. virion. prophage.

Biology & Microbiology

Early gut colonizers are an important source of

a. amino acids. b. vitamin K. c. B vitamins. d. all of the above.

Biology & Microbiology