While no tumor growth or metastasis was detected in CD1d KO mice implanted with TM40D-MB, Jα18 KO mice demonstrated a similar ability to metastasize to lung as compared to wildtype, with increased number and size of lung tumor foci, although this was not statistically significant (P = 0.1877) (Fig. 6B,D). The gene discussed is CD1D; the disease is neoplasm.