Did the hanging drop technique have any practical value?

Yes, the hanging drop technique has practical value, particularly in microbiology and cell Biology. It allows for the observation of live cells in a three-dimensional environment, providing insights into cellular behavior, motility, and interactions. This method is especially useful for studying the growth of microorganisms and the dynamics of cell cultures without the interference of solid surfaces. Additionally, it can help in assessing the viability of cells and their responses to various treatments.