Mycoplasmal Pneumonia 。 Mycoplasma pneumoniae: pleomorphic,wall- less bacteria 。 Also called primary atypical pneumonia and walking pneumonia 。Common in children and young adults 。Diagnosis by PCR or by IgM antibodies Figure 24.14Mycoplasmal Pneumonia Figure 24.14 • Mycoplasma pneumoniae: pleomorphic, wallless bacteria • Also called primary atypical pneumonia and walking pneumonia • Common in children and young adults • Diagnosis by PCR or by IgM antibodies