This could be done with the mRNA technology, where you basically "print out" the requested mRNA overnight. Encoding several proteins is possible.
How the organism would react to such a flurry of foreign proteins, that is another question. 175 unknown proteins is a lot, the immune system could be roused beyond safe levels. It is possible to kill a person (or a mouse) by overstimulating its immune system.
I'm pretty sure we have way more than 175 different antigens at any given time putting our immune system to work. Or we would, if we were still living in nature. In fact, I often think the issue with Covid is more than anything else our chronically debilitated immune systems.
This is a question that would need experiments to settle. AFAIK the original research around mRNA vaccines had to navigate the gap between "not stimulating enough" and "stimulating too much" very carefully.
How the organism would react to such a flurry of foreign proteins, that is another question. 175 unknown proteins is a lot, the immune system could be roused beyond safe levels. It is possible to kill a person (or a mouse) by overstimulating its immune system.