- Infection of Nippostrongylus brasiliensis induces normal increase of basophils in mast cell-deficient Ws/Ws rats with a small deletion at the kinase domain of c-kit. Kasugai, T., Okada, M., Morimoto, M., Arizono, N., Maeyama, K., Yamada, M., Tei, H., Dohmae, K., Onoue, H., Newlands, G.F. Blood (1993)