Ringed sideroblasts are seen in what MDS classification?

In leukemia, the presence of immature malignant cells is classified as:

What is the subject of Berlioz’s Fantastic Symphony?

A 5-year-old patient presents with anemia, neutropenia, thrombocytopenia, lymphoblasts, and prolymphocytes. Cytochemical examination shows myeloperoxidase and SBB negative, and a positive TdT. This hematologic picture is consistent with:

Clinical features of CLL include all the following except:

Lymphocytosis occurs in each of the following conditions except:

Both reinforcers and punishers increase the future likelihood of behavior.

Extinction of a CR involves:

Bandura’s research demonstrated that simply observing aggressive models was not sufficient to produce aggressive behavior in children; reinforcement of the aggressive behavior was needed.

A reflexive reaction that is reliably elicited by an unconditioned stimulus is called a(n) _____ response.