1 “... vaccines, stages of COVID-19 vaccine development and possible nanovaccines for COVID-19, followed...”

2 Table of Contents: “.../suppressive cells (Treg, MDSC) -- Infections - Flu, pneumonia, COVID -- Vaccine responses -- Cancer...”

3 Table of Contents: “... and Quantification of Extracellular Vesicles Release and Capture -- Exosome-Based COVID-19 Vaccine...”

4 Table of Contents: “...From olive oil emulsions to COVID-19 Vaccines - Liposomes Came First -- Preparation of DRV...”

5 Table of Contents: “...1), and FCoV2 Receptor Binding Domains by the T Cells from COVID-19-Vaccinated Humans and FCoV1...”

6 “... with the success of two mRNA-based COVID-19 vaccines support the use of mRNA-based vaccination as an attractive...”