Currently, mycobacteriology laboratory algorithm to detect Mycobacterium tuberculosis (M. tuberculosis) consists of two steps: microscopic examination of a smear prepared from a concentrated specimen (sputum, bronchoalveolar lavage fluid, aspirates, etc) and culture.
All of the five patients with vitreous involvement showed a clearing of the vitreous of at least two steps on fundus examination.
This is a three step process consisting of clinical examination, radiological examination and histological examination.
To allow direct measurement of abdominal arterial enhancement, the study examination consisted of two steps including unenhanced imaging of the abdomen followed by abdominal CT angiography during the arterial first pass.
For lung lobe examinations, five step sections were performed at 50 μm intervals on lungs harvested from mice bearing tumours for 8 weeks.
One step forward and two steps back".
One step forward, two steps back.
Two steps, actually: England and Europe.
