Bacteriocins may function as colonizing peptides, facilitating the introduction and/or dominance of a producer into an already occupied niche (48). Alternatively, bacteriocins may act as antimicrobial or killing peptides, directly inhibiting competing strains or pathogens (38).
At issue is whether some granite countertops emit dangerous levels of radiation, especially the gas radon, which is the second leading cause of lung cancer after smoking. Experts agree that most granite countertops emit some radon and even other types of radiation.
Although you may still occasionally hear remarks such as âradon is a hoax!â or âsome radon is good for you,â there is no scientific doubt that exposure to high radon levels can cause lung cancer.lthough you may still occasionally hear remarks such as âradon is a hoax!â or âsome radon is good for you,â there is no scientific doubt that exposure to high radon levels can cause lung cancer.