The cost-efficient techniques to evaluate the age-based structural heterogeneity and morphological analysis of multicellular tumor spheroids. - Aziz-Ur-Rahman -; Ur Rehman M; Abdur Rashid S; Ahmad S; Asif Khan M; Tariq I; Abidullah -; Rahim Khan N; Naz A; Kibria S; Khan J (Pakistan journal of pharmaceutical sciences, 2025)