Final answer:
Draining the tissue bath between treatments is essential to avoid cross-contamination and ensure accurate experiments, as the interstitial fluid is significant for the delivery and removal of substances surrounding the cells.
Step-by-step explanation:
Draining the tissue bath between each treatment in an experiment is typically essential to maintain the integrity of the results. This step ensures that substances from the previous treatment do not interfere with the new treatment being administered. The interstitial fluid that bathes the cells in tissues is responsible for the delivery of materials and intercellular communication, as well as the removal of metabolic waste.
If the bath is not drained between treatments, the concentrations of substances in the fluid could accumulate or change, potentially skewing the results of the experiment. In most experimental setups that involve a tissue bath, the aim is to assess the response of the tissue to various treatments under controlled conditions. Contaminants or residual chemicals from an earlier treatment could influence the tissue's responsiveness, thus compromising the accuracy of the study's findings.