Karyotype
Cytogenetic analysis at passage 0 (T92-017) revealed a modal number of 66-70 with a range of 39-113 chromosomes per cell. Numerical alterations include -4, -9, +12, -15, -19, -19, +20, -21, -21, -22, -22, -x. Structural alterations are i(1q) [5], +del(1)(p31) [6], +der(3)t(2;3)(p11;p11) [5], add(5)(q31) [6], del(7)(q112) [6], +i(8q) [5], add(11)(p15) [6], add(13)(p12) [4], i(15q) [4], der(16)t(3;?;16)(q11;?;q24) [6], i(17q) [6], ider(19)(q10)add(19)(q134) [5], add(22)(q13) [5] with 3 unidentified markers. Note the isochromosome of 1q, 8q, 15q, 17q and 19q. Passage 10.