Cai, Y., Kim, D., Takahashi, T., Broadhurst, D., Yan, H., Ma, S., Rattray, N., Casanovas-Massana, A., Israelow, B., Klein, J., Lucas, C., Mao, T., Moore, A., Muenker, M., Oh, J., Silva, J., Wong, P., Yale IMPACT Research Team, Ko, A., Khan, S., Iwasaki, A. & Johnson, C. 2021, 'Kynurenic acid may underlie sex-specific immune responses to COVID-19', Science Signaling, 14(690), article no: eabf8483. https://doi.org/10.1126/scisignal.abf8483