Cholesterol
- Cold-hardening during long-term acclimation in a freeze-tolerant woolly bear caterpillar, Pyrrharctia isabella
Summary: After an extended period of cold acclimation, woolly bear caterpillars survived freezing at −20°C. Cold-hardening markedly increased hemolymph osmolality, as well as hemolymph levels of free proline, total amino acids and proteins.