Validated reproduction
Tissue from one cell
Quantitative claim
One founder cell grows into a solid 3D ball whose descendants read a maternal gradient into three concentric shells of fate while contact inhibition self-limits growth - nothing scripted but the genome.
Published reference
Capstone integration (Wolpert positional info + Kauffman attractors)
This reproduction runs as an automated quantitative check in the CI test suite. If the result drifts out of tolerance, the build fails.
Describe a variation of this experiment and the engine runs it live - no signup needed.