This could be the case. I remember this controversy few years ago about Tardigrade genome. The problem was that other paper said that "foreign" dna was the prob

This could be the case. I remember this controversy few years ago about Tardigrade genome. The problem was that other paper said that "foreign" dna was the probable reason behind cryptobiosis in Tardigrade. This particular paper found that it was mostly likely a contamination. Koutsovoulos, G., Kumar, S., Laetsch, D. R., Stevens, L., Daub, J., Conlon, C., Maroon, H., Thomas, F., Aboobaker, A. A., & Blaxter, M. (2016). No evidence for extensive horizontal gene transfer in the genome of the tardigrade Hypsibius dujardini. Proceedings of the National Academy of Sciences, 113(18), 5053–5058. https://doi.org/10.1073/pnas.1600338113 https://doi.org/10.1073/pnas.1600338113