Following statements are regarding to metastasis (using breast carcinoma cells as an example).

A. Cancer cells leave the main tumor and attack the basement membrane, using extracellular matrix (ECM) fibers to reach the blood vessels.

B. The cancer cells can be attracted by signals such as epidermal growth factor (EGF), which can be secreted by macrophages.

C. At the blood vessels they penetrate the layer of endothelial cells that forms the vessel walls and enter the bloodstream.

D. Carcinoma cells penetrate the extracellular matrix and blood vessel wall by extending “invadopodia,” which produce matrix metalloproteases and other proteases to open up a path.

Which of the following statement shows process of angiogenesis?

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#Question id: 20540

#Unit 12. Applied Biology

Toluene, ethylbenzene and xylene must be kept to ________levels in drinking and recreational waters due to their toxicity

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#Question id: 10824

#Unit 10. Ecological Principles

Interspecific competition has been demonstrated experimentally in

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#Question id: 3909

#Unit 3. Fundamental Processes

The template strand of DNA is copied by RNA polymerase from

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#Question id: 2739

#Unit 2. Cellular Organization

With respect to remodeling complex of nucleosome, which of the following is not true?

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#Question id: 9602

#Unit 9. Diversity of Life Forms

The legless condition that is observed in several groups of extant reptiles is the result of