As a clinical consultant for the Breathright drug research firm, you are given the task of using an in vitro assay to screen ten thousand drug analogs to find the most potent beta-2 receptor agonist. When analyzing your data, the biomarker that you should screen for is:

As a clinical consultant for the Breathright drug research firm, you are given the task of using an in vitro assay to screen ten thousand drug analogs to find the most potent beta-2 receptor agonist. When analyzing your data, the biomarker that you should screen for is:

A29-year-old woman suffering from allergic rhinitis started treatment with loratadine. The drug can completely counteract the histamine-induced release of which of the following endogenous compounds?

A 21-year-old woman suffering from seasonal allergic conjunctivitis started a treatment with eye drops of azelastine, a second-generation histamine H1 antagonist. Second-generation H1 antagonists are used locally in the conjunctiva instead of first-generation H1 antagonists to provide which of the following therapeutic advantages?

What is implied by 'active transport'?

Biological barriers include all except