Lyophilised foot tissues and shells of H. aspersa Müller were rich in S. One study indicated apoptosis-inducing capability of S in drug-resistant non-small cell lung carcinoma (NSCLC) cells, by shifting cellular environment from NF-κB-mediated survival milieu to p53-mediated apoptosis [46]. The gene discussed is TP53; the disease is non-small cell lung carcinoma.