How do retroviruses exit the cell?

Question

Do they just pass through the membrane? Is there some specific transporter or mechanism? Does it vary? I've seen pictures if retroviruses outside the cell but no details

Answer 1

The research community has confidently established retroviruses leave the cell by budding. This suggestion was first done in 1991 when researchers introduced mutations into the protein complex known as Gag which caused viral particles to accumulate on the inside of cells. Recently, studies have concluded the virus interacts with endosomal sorting complex required for transport (ESRTs). The exact timing, and specific mechanism, remains unknown.