![The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance | Science The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance | Science](https://www.science.org/cms/10.1126/science.abq5358/asset/690a81f2-e950-4211-9903-236db15897cf/assets/images/large/science.abq5358-fa.jpg)
The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance | Science
![Synthesis of a magnetic polystyrene-supported Cu(II)-containing heterocyclic complex as a magnetically separable and reusable catalyst for the preparation of N-sulfonyl-N-aryl tetrazoles | Scientific Reports Synthesis of a magnetic polystyrene-supported Cu(II)-containing heterocyclic complex as a magnetically separable and reusable catalyst for the preparation of N-sulfonyl-N-aryl tetrazoles | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-023-30198-7/MediaObjects/41598_2023_30198_Fig1_HTML.png)
Synthesis of a magnetic polystyrene-supported Cu(II)-containing heterocyclic complex as a magnetically separable and reusable catalyst for the preparation of N-sulfonyl-N-aryl tetrazoles | Scientific Reports
![Amazon.com: 1993-94 Upper Deck #59 J.R. Reid San Antonio Spurs Basketball NBA : Collectibles & Fine Art Amazon.com: 1993-94 Upper Deck #59 J.R. Reid San Antonio Spurs Basketball NBA : Collectibles & Fine Art](https://m.media-amazon.com/images/I/71Nz1D0xIGL.jpg)