D. the drugs are more toxic to the pathogens than to the patient
A. Selective toxicity refers to the fact that antimicrobial agents target a particular microbial structure, molecule, or pathway to exert their effect. B. Selective toxicity refers to the ability of an antimicrobial to kill microbes with minimal damage to the host.
D. Ehrlich's arsenic-based compounds were produced after the discovery and mass production of penicillin.
A. the drugs will not have toxic effects on a patient
The characteristic histologic changes in the bronchi, including remodeling of airways and smooth muscle hyperplasia, result from the episodes of inflammation. Dilation of the respiratory bronchiole is a feature of centrilobular emphysema. Bronchial dilation with inflammatory destruction is a feature of bronchiectasis.
Bronchopulmonary aspergillosis refers to colonization of asthmatic airways by Aspergillus, which is followed by development of additional IgE antibodies. Secretion of interleukin (IL)‐4 and IL‐5 by type 2 helper T cells also occurs in cases of allergic asthma.
Penicillin disrupts the cell wall, which is located outside of the cell membrane.
It can also damage living human cell membranes, but the drug is safely used on the skin, where the outer layers of cells are dead .
Amoxicillin is very effective for treat ing infections with Gram-positive bacteria but rarely causes side effects in humans. This is an example of