It is not the first time that Atlético feel mistreated by the work of video arbitration. In February, the rojiblanco team already experienced two situations where it claimed the appearance of the VAR. The first, in the derby against Real Madrid where he considered that Casemiro committed a penalty on Morata and neither the collegiate nor from the VAR room acted to signal it. In the next game Atlético won Granada 1-0, but no one was happy with the Soto Grado arbitration. The play that irritated the rojblancos most came with a soldier elbow in the face of Correa in the area of Granada. A play that would have been a penalty and the second yellow card for the striker of the Andalusian team. Medié Jiménez did not notify the Voto to Soto Grado for review. Atletico ended again an annoying match for the use of the VAR. From the rojiblanco set they do not understand why video arbitration did not come to value Embarba’s elbow to Savic in minute 37, action that Alberola Rojas grounded with a yellow card. The central Montenegrin rose from the ground bleeding and very upset with the action of the Espanyol player, who recriminated the blow. After Savic himself confirmed that the elbow split two teeth. The defender was in charge of denouncing the discomfort of the rojiblanco team when certain actions are reviewed. “It’s a red manual. The player jumps, does not look at the ball and elbows me in the mouth. I don’t understand what the VAR is for if these plays are not reviewed, it is a red example “he declared at the end of the duel. A review room where he was Sánchez Martínez.
Scientists have a long way to go before they can match the self-building powers of the human body. But now, a new technique for assembling flexible polymers and living cells may get them one step closer. Previously, researchers investigating how tissues and organs function (or don’t) had few options for creating artificial tissues—so-called organs-on-chips—that they could use to avoid experimenting on animals and people. They typically built their tiny organ models one piece at a time from individual gel bricks filled with suspended cells, a time-intensive process that limited what the bricks could be made of and how they could be shaped. Now, scientists say they have solved those problems with microfluidics and electricity. Using electric fields, they can push and pull tiny, particle-filled droplets between two glass plates, assemble them into a larger configuration, and treat the droplets to form adhesive gels. This lets them control the droplets’ movement and manipulate the particles, like cells, suspended within. As a result, they can assemble gels from a wide variety of materials and control the configuration of both the bricks and the cells inside them. Already, the researchers have used the technique to create a heartlike tissue whose cells beat in time, they report today in Science Advances. If the technique can be refined to provide perfect control of cells, it can be used to build precise architectures of living cells, paving the way for artificial tissues, cell-based robots, and more sophisticated organ models.