Pathological specimens to be obtained for investigations include:

Sputum for culture, AAFBS and gram stain
Blood for full hemogram/complete blood count, ESR and other acute phase reactants
Procalcitonin test, more specificOn a posteroanterior and lateral chest radiograph, an entire lobe will be radiopaque, which is indicative of lobar pneumonia. The identification of the infectious organism (or other cause) is an important part of modern treatment of pneumonia. The anatomical patterns of distribution can be associated with certain organisms, and can help in selection of an antibiotic while waiting for the pathogen to be cultured. References
External links
 Media related to Lobar pneumonia at Wikimedia Commons
Singing
Children are able to sing in the same octave as women. When the voices of male teenagers break, they are no longer able to sing in the same octave. For music sung in the same key as women, they can sing in falsetto or drop an octave. See also
Puberty
Voice masculinization and feminization


== References ==