<unk>  are microscopic<unk>  found in people who have allergic diseases such as asthma or parasitic infections such as parasitic pneumonia or ascariasis. They vary in size and may be as large as 50 µm in length.<unk>  are slender and pointed at both ends, consisting of a pair of hexagonal pyramids joined at their bases. Normally colorless, they are stained purplish-red by trichrome. They consist of lysophospholipase, an enzyme synthesized by eosinophils, and are produced from the breakdown of these cells. They are indicative of a disease involving eosinophilic inflammation or proliferation, such as is found in allergic reactions and parasitic infections.
Charcot-Leyden crystals
Peribronchial cuffing
Bauxite fibrosis
Crazy paving sign
Bence Jones protein
Plasmacytosis
Monocytosis
Antistreptococcal antibodies