An inflammatory process that has

continued for 3 months includes the transformation of tissue macrophages to

epithelioid cells. There are also lymphocytes present. Over time, fibroblasts

lay down collagen as the focus of inflammation heals. These events are most

likely to occur as an inflammatory response to which of the following

infectious agents?

A laboratory

experiment is performed to evaluate the chemotactic potential of a group of

potential mediators. Which of the following substances most likely has the greatest

affinity for neutrophils?

Identify the structure in the

photomicrograph marked by

Identify the pigment

accumulated in the dilated bile ducts in the liver marked by A.

Identify the cell in the image

marked by C.

While in a home improvement center

warehouse buying paint, a 35-year-old man struck on the leg by a falling pallet

rack, which strikes him on his thigh. The skin is not broken. Within 2 days

there is a 5 x 7 cm purple color to the site of injury. Which of the following

substances has most likely accumulated at the site of injury to produce a

yellow-brown color at the site of injury 16 days later?

A 29-year-old man hospitalized for

acquired immunodeficiency syndrome (AIDS) is found to have pulmonary

tuberculosis. Which type of necrosis is found in the granulomatous lesions

(clusters of modified macrophages) characteristic of this increasingly frequent complication of AIDS?

Metastatic

calcification happens in all of the following cases EXCEPT:

A study is performed to identify predisposing

risks for tissue cellular changes. In some person’s epithelial metaplasia

occurs. In which of the following situations is the process of epithelial

metaplasia most likely to take place?

A 71-year-old man has difficulty with urination.

His urinary retention leads to numerous trips to the restroom per day. On

digital rectal examination is prostate is diffusely enlarged. Which of the

following represents a pathologic change leading to this man's problem?