5 Immunotherapeutic agents, namely, antibodies, vaccines, and pharmaceutical preparations thereof for the treatment of cancer and neurodegenerative, neurodevelopmental and cognitive disorders; Therapeutic agents for transport and delivery of small molecules and biologics to the lymphatic system; Exosome-based pharmaceutical preparations to facilitate the oral administration and delivery of therapeutic agents; pharmaceutical preparations for the modulation of lymphatic function in the brain for the treatment, prevention, and delayed onset of central nervous system disorders, Alzheimer's disease, Huntington's disease, age-associated cognitive decline and diseases associated with neurodegenerative, neurodevelopmental and cognitive disorders; Therapeutic agents for the treatment of fibrotic diseases, namely, interstitial lung disease, pulmonary fibrosis, lymphedema, sclerosis, and scleroderma