21 by Sadeghi Asl, Pegah, Barzegar Amiry, Zohre, Rostami, Fatemeh, Maghsoodloo Rad, Azadeh

21 by Castiglia, Virginia, Ebner, Florian, Kovarik, Pavel

Demonstration of Shor’s factoring algorithm for N = 21 on IBM quantum processors by Skosana, Unathi, Tame, Mark

21 by Petty, Sandra, Milligan, Carol, Todaro, Marian, O’Brien, Terence, Wark, John, Mackie, Eleanor, Petrou, Steve

21 by Beug, Shawn T., Tang, Vera A., Cheung, Herman C., Boeuf, Fabrice Le, Bell, John C., LaCasse, Eric C., Korneluk, Robert G.

Tfh-cell-derived interleukin 21 sustains effector CD8+ T cell responses during chronic viral infection by Zander, Ryan, Kasmani, Moujtaba Y., Chen, Yao, Topchyan, Paytsar, Shen, Jian, Zheng, Shikan, Burns, Robert, Ingram, Jennifer, Cui, Can, Joshi, Nikhil, Craft, Joseph, Zajac, Allan, Cui, Weiguo

Paving the way to the New Pact on Migration and Asylum: Some reflections on Ministero dell’Interno (Joined Cases C-228/21, C-254/21, C-297/21, C-315/21, C-328/21) by Gerbaudo, Marco

21 by Petty, Sandra, Milligan, Carol, Todaro, Marian, O’Brien, Terence, Wark, John, Mackie, Eleanor, Petrou, Steve

Determination of z ∼ 0.8 neutral hydrogen fluctuations using the 21 cm intensity mapping autocorrelation by Switzer, E. R., Masui, K. W., Bandura, K., Calin, L.-M., Chang, T.-C., Chen, X.-L., Li, Y.-C., Liao, Y.-W., Natarajan, A., Pen, U.-L., Peterson, J. B., Shaw, J. R., Voytek, T. C.

A Coplanar π‐Extended Quinoxaline Based Hole‐Transporting Material Enabling over 21 % Efficiency for Dopant‐Free Perovskite Solar Cells by Guo, Huanxin, Zhang, Hao, Shen, Chao, Zhang, Diwei, Liu, Shuaijun, Wu, Yongzhen, Zhu, Wei‐Hong

Funding through resources collected from private entities bypassing the state budget may involve state resources: cases C-790/21 P, Covestro Deutschland; C-792/21 P, AZ; C-794/21 P, Infineon technologies; and C-795/21 P, WEPA Hygieneprodukte by Kociubiński, Jakub

Brahmin Left Versus Merchant Right: Changing Political Cleavages in 21 Western Democracies, 1948–2020 by Gethin, Amory, Martínez-Toledano, Clara, Piketty, Thomas

The Depression Anxiety Stress Scales-21 (DASS-21): Further Examination of Dimensions, Scale Reliability, and Correlates by Osman, Augustine, Wong, Jane L., Bagge, Courtney L., Freedenthal, Stacey, Gutierrez, Peter M., Lozano, Gregorio

An elevated expression of serum exosomal microRNA-191, − 21, −451a of pancreatic neoplasm is considered to be efficient diagnostic marker by Goto, Takuma, Fujiya, Mikihiro, Konishi, Hiroaki, Sasajima, Junpei, Fujibayashi, Shugo, Hayashi, Akihiro, Utsumi, Tatsuya, Sato, Hiroki, Iwama, Takuya, Ijiri, Masami, Sakatani, Aki, Tanaka, Kazuyuki, Nomura, Yoshiki, Ueno, Nobuhiro, Kashima, Shin, Moriichi, Kentaro, Mizukami, Yusuke, Kohgo, Yutaka, Okumura, Toshikatsu

Planar‐Structure Perovskite Solar Cells with Efficiency beyond 21 by Jiang, Qi, Chu, Zema, Wang, Pengyang, Yang, Xiaolei, Liu, Heng, Wang, Ye, Yin, Zhigang, Wu, Jinliang, Zhang, Xingwang, You, Jingbi

Detectability of 21 cm-signal during the Epoch of Reionization with 21 cm-Lyman-α emitter cross-correlation – II. Foreground contamination by Yoshiura, S, Line, J L B, Kubota, K, Hasegawa, K, Takahashi, K

Evidence for a gold trimer on the Si(111)-21×21-(Ag+Au) surface by Takahashi, Toshio, Yamaguchi, Yudai, Shirasawa, Tetsuroh, Voegeli, Wolfgang, Tajiri, Hiroo

Fibroblast Growth Factor 21—Metabolic Role in Mice and Men by Staiger, Harald, Keuper, Michaela, Berti, Lucia, Hrabě de Angelis, Martin, Häring, Hans-Ulrich

Data Analysis for Precision 21 cm Cosmology by Liu, Adrian, Shaw, J. Richard

Mosaic trisomy 21 at amniocentesis in a twin pregnancy associated with a favorable fetal outcome, maternal uniparental disomy 21 and postnatal decrease of the trisomy 21 cell line by Chen, Chih-Ping, Hsu, Te-Yao, Chern, Schu-Rern, Wu, Peih-Shan, Chen, Shin-Wen, Wang, Liang-Kai, Wu, Fang-Tzu, Pan, Yen-Ting, Lee, Chen-Chi, Chen, Yun-Yi, Wang, Wayseen