EIF4EBP1 and cervical carcinoma: Culturing HeLa cervical cancer cells in glutamine‐depleted medium, which reduced phosphorylation of S6 and 4E‐BP1, slightly increased EV number (Appendix Fig S7A, A′, and A′′′, Fig EV4E) and increased Rab11a secretion relative to other exosome markers (Fig 5A and G, Appendix Figs S3B, S5B and C, and S7A′′), while cellular levels of Rab11a were unaffected (Appendix Fig S7A).