What are the main applications of exosomes? what biological functions do exosomes play in mammalian pregnancy?

At present, exosomes research mainly focuses on antigen presentation in immunity, tumor growth and migration, repair of tissue damage, etc. The research of exosomes in mammalian fertilization, embryo development, immunity related to endometrial implantation, placental vascular formation during pregnancy, embryo implantation and other aspects is in the initial stage, compared with rodents and humans, the research on livestock is relatively scarce.

Explanation:

https://www.creative-biostructure.com/exosome-engineering-649.htm

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

it would lead to upper respiratory infections and pneumonia.