Brefly explain Endogenous antigen & examples & autoantigen

Exogenous antigens refer to the antigens that enter the body of the organism from the outside while endogenous antigens refer to the antigens produced from within the cell as a part of normal cell metabolism or when the cell is infected by bacteria or viruses.

Examples

viral proteins produced during viral replication;

proteins produced by intracellular bacteria such as Rickettsias and Chlamydias during their replication;

proteins that have escaped into the cytosol from the phagosome of phagocytes such as antigen-presenting cells;

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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i think that c)gold was found there

but i am not sure