7 H E 1MMUNE 5Y57EM A5 A NEURAL NE7W0RK: AN AL7ERNA71VE APPR0ACH 7 0 1MMUNE C 0 6 N 1 7 1 0 N Frank 7. Vert051ck, Jr. MD We5t Penn Center f0r Neur00nc0109Y Department5 0f Path0109y and Neur01091ca1 5ur9ery Un1ver51ty 0f P1tt56ur9h 5ch001 0f Med1c1ne 7he app11cat10n 0f netw0rk m0de111n9 t0 the 1mmune re5p0n5e date5 6ack t0 Jerne ¢5 0r191na1 w0rk 0f the ear1y 1970 ¢5 (Jerne, 1974). 1mmune recept0r5, 1.e., 1mmun09106u11n5 and 7 ce11 ant19en recept0r5, expre55 un14ue ant19en1c determ1nant5 w1th1n 0r near the1r ep1t0pe61nd1n9 re910n5 kn0wn a5 1d10t0pe5. 7he 5et 0f an 1mmune recept0r ¢5 1d10t0pe5 def1ne an 1d10type. An 1d10type can 6e aut0ant19en1c, e11c1t1n9 an ¢ ¢ant11d10type ¢ ¢ re5p0n5e w1th1n the 0r9an15m. Jerne 6e11eved that the 1mmune 5y5tem 15 0ne 1ar9e e4u1116rated we6 0f 1d10type-ant11d10type 1nteract10n5. When pertur6ed 6y the 1ntr0duct10n 0f ex09en0u5 ant19en, th15 1d10type- ant11d10type netw0rk a110wed an ade4uate re5p0n5e t0 0ccur and then damped further c10na1 expan510n. A1th0u9h Jerne ¢5 0r191na1 netw0rk hyp0the515 ha5 6een extended and mathemat1ca11y ref1ned, 1t rema1n5 an e55ent1a11y k1net1c, n0t c09n1t1ve, parad19m 0f 1mmune re5p0n51v1ty. Under5tand1n9 h0w the 1mmune re5p0n5e d0e5 n0t exp10de 1nt0 unc0ntr011ed 1ymph01d ne0p1a51a 15 the ra150n d ¢etre 0f the Jerne
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