Learn Cryobiology

Build your understanding from freezing fundamentals to organ preservation.

Your own pace. A clear path.

Choose to remember completed lessons. No account required.

01

Foundations

Understand the relationship between living cells, water, and temperature.

Conceptual illustration of ice crystal formation
Illustration · CryoAtlas / OpenAI ImageGen
01

What Is Cryobiology?

Meet the science of life at low temperatures.

3 min
02

What Happens to Cells at Low Temperatures?

Follow a cell as molecular movement slows.

3 min
03

Why Ice Damages Cells

Ice changes more than the shape of water.

3 min
04

Ice Nucleation and Crystal Growth

Understand how the first ice crystal begins.

3 min
05

Osmosis and Cellular Dehydration

See why cells shrink as their surroundings freeze.

3 min
02

Cryopreservation

Discover the strategies that make preservation possible.

Conceptual illustration of cryogenic sample storage
Illustration · CryoAtlas / OpenAI ImageGen
06

Cryoprotective Agents

How protective chemistry changes the freezing problem.

4 min
07

Controlled-Rate / Slow Freezing

Give water time to move without overexposing the cell.

3 min
08

Vitrification

Preserve a disordered solid instead of crystalline ice.

4 min
09

Rewarming and Devitrification

Why coming back from the cold is just as important.

4 min
10

Measuring Post-Thaw Survival

Look beyond the number of cells that appear alive.

3 min
03

What can we preserve?

Connect the fundamentals to cells, tissues, and organs.

Conceptual illustration of kidney preservation
Illustration · CryoAtlas / OpenAI ImageGen
11

Cryopreservation of Cells

Start with the smallest units of life.

3 min
12

Cryopreservation of Tissues

Protect connections as well as individual cells.

3 min
13

Organ Preservation

Why an organ is so much harder than a vial of cells.

4 min
14

Reproductive Cryobiology

Preserving reproductive cells and embryos.

3 min
15

Future Directions in Cryobiology

Ask better questions about what comes next.

3 min