Original title: Interstitial flow in the chick yolk sac exhibits organ-scale patterns driven by segregated leakage and drainage
Adithya Srinivasan, Deshik Reddy Putluru, Elizabeth A. V. Jones, Hector Gomez · September 2026
Fluid slowly creeps through the tiny spaces between our cells, a process called interstitial flow. This flow is vital for moving medicine, growing blood vessels, and fighting cancer. Scientists wondered whether this fluid only moves locally near blood vessels or travels across whole organs. To find out, researchers examined developing chick yolk sacs by combining experimental imaging with whole-organ computer models. They discovered that interstitial flow actually spans entire organs rather than staying confined to tiny areas. This large-scale movement happens because the sites where blood vessels leak fluid into tissue are separated from where vessels soak it back up. In these broad patterns, fluid moves much faster through tissue spaces than it does across vessel walls. This means physical cues carried by fluid can travel across an organ before cells sense them.
Imagine watering a garden with a hose. You expect water to soak into the soil near where you spray. But if the soil has a thick clay layer in one spot and sand in another, the water might leak far away from where you watered and drain somewhere else entirely. In this paper, the chick yolk sac's blood vessels are like the hose, and the tissue's different leakiness causes fluid to travel long distances before draining, forming organ-wide flow patterns.
Interstitial flow affects how drugs reach tumors and how cancer spreads. This study shows that flow can span entire organs, not just local areas. That means treatments or signals delivered at one spot might travel far, potentially changing how we design therapies for edema, cancer, and drug delivery.
The abstract doesn't say. It describes organ-scale patterns and mechanisms in chick yolk sac but does not list shortcomings or discuss generalization to other tissues or species.
Ask anything about this paper. Answers come from its abstract, and say so when the abstract doesn't cover your question.
Interstitial flow in the chick yolk sac exhibits organ-scale patterns driven by segregated leakage and drainage — Adithya Srinivasan, Deshik Reddy Putluru, Elizabeth A. V. Jones et al.
Abstract licence: CC0
Explanation generated by Synthesis from the abstract — it is not the original paper. This is a preprint, so it hasn't necessarily been peer reviewed.