The handpiece that is used for dental caries removal and fine-finishing work is the high-speed handpiece

Fetus compressus, first trimester: ________

Fill in the blank with correct ICD-10.

What is the required oxidation state (valence) of iron that enables it to bind to a chromogen in most spectrophotometric assays?

A. –3 B. +3 C. +2 D. +1