Until’s Series A
We’ve raised $100M+ to date, we are developing reversible cryopreservation for patients in need of donor organs, and we are hiring.
The Until Team
What looks like a peaceful afternoon,
is also a bustling molecular landscape.
If you need to buy some time in a
biological system,
temperature
is a lever.
Lower it, motion slows,
and metabolism stalls
Ice presents the key challenge,
that cryoprotectants can solve.
Below –130°C,
water turns to glass.
We build technology to safely prevent ice formation during the vitrification process
When heat returns,
more afternoons like this.
[ Scroll to discover ]
Reversible cryopreservation has one core principle: Pause molecular motion and resume it, without ice formation.
We are scaling this principle to create a fundamentally new way to prevent donor organs from timing out.
From Principle to Protocol
We translate the fundamentals of cryobiology into engineered workflows that safely and reversibly preserve donor organs.
Inside the Science
Explore how we are advancing this technology across five dimensions: perfusion, cryoprotectants, cooling, rewarming, and the assessment of organ health.
Learn MoreThe Until Path
Until is developing reversible cryopreservation systems for human organs to solve the donor organ procurement and matching problem.
In doing so, we de-risk and answer key questions relevant to whole-body reversible cryopreservation while building products that help patients today.
[ 1 ]A remarkably interdisciplinary lab
[ 2 ]With great minds
[ 3 ]Solving hard problems
[ 4 ]Because too many patients are waiting
Join our team. We are looking for ambitious physicists, chemists, biologists, data scientists, engineers and surgeons.
Join the teamAt Until, every line of code, every lab protocol, every design review serves one goal: give patients more time. Join us to build medical infrastructure that meets human need.
The Until Blog
The Until Team
