Used for detecting and quantifying thymidine kinase (TK) enzyme activity in rat samples, this ELISA kit is widely applied in preclinical research to assess cell proliferation. It is particularly useful in cancer studies, where elevated TK levels correlate with tumor growth and disease progression. The kit supports research in drug development, especially for evaluating the efficacy of antiproliferative or anticancer agents in rat models. It enables high-throughput screening and provides a reliable, sensitive method for monitoring cellular turnover in toxicology and oncology studies.