Lechevalier H, Lechevalier M P
J Bacteriol. 1969 Oct;100(1):522-5. doi: 10.1128/jb.100.1.522-525.1969.
The electron microscopic observation of vesicles formed by Intrasporangium calvum revealed that they do not contain spores. It thus seems that these vesicles should not be called sporangia. Isolation and study of three other strains of actinomycetes forming similar vesicles indicated that such structures can be formed by actinomycetes with very different properties. The taxonomic value of vesicle formation in actinomycetes is questioned.
对光裸内孢囊形成的囊泡进行电子显微镜观察发现，它们不含孢子。因此，这些囊泡似乎不应被称为孢子囊。对形成类似囊泡的其他三株放线菌的分离和研究表明，具有非常不同特性的放线菌都能形成这样的结构。放线菌中囊泡形成的分类学价值受到质疑。
