Exam 42: Mycobacteria

The 3-day test that is useful for identifying the rapid growers, M.fortuitum and M.chelonae, and that measures the rate by which this enzyme breaks down phenolphthalein disulfate into phenolphthalein and other salts is the ____________ test.

Fluorescent staining is more sensitive than conventional carbolfuchsin stains.What counterstain is used during the procedure?

In the identification of mycobacterial isolates, the catalase test involves the:

The specimen of choice for detecting tuberculous pulmonary mycobacterial disease is:

Negative mycobacterial cultures are reported final and the cultures are discarded after what period?

The specimens of choice for detecting nontuberculous mycobacterial disease are:

Which continuous growth system uses a CO₂ sensor to monitor mycobacterial growth?

Under what circumstance might slow-growing mycobacteria appear to produce colonies in a few days?

The tuberculin skin test, or the purified protein derivative (PPD)test, is based on:

The first test that is always performed on organisms growing on solid or liquid mycobacterial media is a(n):

When culturing for Mycobacterium, rapid growers usually produce colonies within how many days after subculture?

The recent emergence of epidemic multidrug-resistant strains of Mycobacterium tuberculosis, in conjunction with the end of the downward trend of reported cases of tuberculosis in the United States, has been largely attributed to:

A positive tuberculin skin test, or PPD test, is characterized by:

The most commonly isolated mycobacterium in the United States is:

Characteristics that are found in the bacteria called Mycobacterium are:

Slow-growing NTM whose colonies are pigmented when grown in the dark or the light are referred to as:

The fluorochrome method of staining Mycobacterium:

The stain that requires heating the slide for better penetration of stain into the mycobacterial cell wall is known as the:

The term complex as used in the M.tuberculosis complex:

In the identification of mycobacterial isolates, the Tween 80 test involves: