Finger I, Onorato F, Heller C, Dilworth L
Genetics. 1972 Sep;72(1):35-46. doi: 10.1093/genetics/72.1.35.
Paramecium generally expresses only one antigen on its surface from among an array of antigens. This mutual exclusion of antigens now has been shown in certain instances to be illusory. Unstable clones which will give rise to subclones with new serotypes possess several antigens. Unstable clones, even though they manifest only one serotype, continually manufacture an antigen other than the surface antigen characteristic of the serotype.
草履虫通常在一系列抗原中仅在其表面表达一种抗原。现在已表明,在某些情况下,这种抗原的相互排斥是虚幻的。会产生具有新血清型的亚克隆的不稳定克隆具有几种抗原。不稳定克隆,即使它们仅表现出一种血清型,也会持续产生一种不同于该血清型表面抗原特征的抗原。