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. 2020 Nov 30;6:107. doi: 10.1038/s41378-020-00216-z

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — a Schematic side view of the FCB and three MFBBs. The MFBB control channels (green) are operated via the FCB. The FCB control channels (orange) can block pressure transmission to an MFBB. If the FCB valve of an MFBB is closed (open), the MFBB is disabled (enabled) or OFF (ON). b Top view of the FCB. Each of the 13 MFBB control channels branches off from a common inlet to 3 MFBB ports. Each set of channels is controlled by a set of FCB valves (purple)