The evolution of SARS-CoV-2 variants with increased fitness has been accompanied by structural changes in the spike (S) proteins, which are the major target for the adaptive immune response.

In this video, I show you how to build a gourd tunnel trellis to grow gourds, luffas, and other climbing vegetables. Link to Hugelkultur vid mentioned: <a href=" Support me on Patreon: <a href=" Help ...