Drug A has a TD50 of 25 μg/ml and an ED50 of 21 μg/ml. Drug B has a TD50 of 28 μg/ml and an ED50 of 14 μg/ml. Which drug is the riskier choice?  

ATP is often called the cell’s “energy currency” because it:

A patient develops a catheter-associated bloodstream infection, and the bacteria resist phagocytosis due to a protective outer layer. Which structure is responsible?

Which processes form the upper lip?

What pharyngeal arch do the muscles of facial expression arise from?

The initial cell formed after union of the ovum and sperm is called a:

Which group of alveolodental fibers are found only on multirooted teeth?

What is made up of hydroxyapatite crystals, and is the primary unit of the structure of enamel.

Place the stages of odontogenesis in the correct order.

The dental lamina develops an extension known as the successional lamina, what side of the primary tooth does this start to form?