expression of concern

Editorial expression of concern

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Science Advances  14 Aug 2020:
Vol. 6, no. 33, eabe3154
DOI: 10.1126/sciadv.abe3154

In the 31 July 2020 issue, Science Advances published the Research Article “Human sperm uses asymmetric and anisotropic flagellar controls to regulate swimming symmetry and cell steering” by H. Gadêlha, P. Hernández-Herrera, F. Montoya, A. Darszon, and G. Corkidi (1). The corresponding authors have now notified Science Advances of the concern that, upon reexamination, sections of the mathematical analysis in the paper are not fully able to either prove or disprove a core conclusion of the article, namely that the flagellar beat in human sperm is asymmetric. A re-analysis by the authors is underway, and Science Advances is publishing this Editorial Expression of Concern to alert our readers while we await the outcome.

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