巨细胞由多个上皮样细胞融合而成。图示两个朗格汉斯巨细胞，其细胞核沿着细胞周围排列。更多的上皮样细胞构成了肉芽肿的其它部分。
Giant cells are a "committee" of epithelioid macrophages. Seen here are two Langhans type giant cells in which the nuclei are lined up around the periphery of the cell. Additional pink epithelioid macrophages compose most of the rest of the granuloma.