Table 1.

Tumorigenicity assays of parental HONE1 and HONE1–chromosome 3 microcell hybrid clones

Cell line	Identification	Tumor formation, no. tumors/no. sites	Time to appearance of tumors, days
HONE1	Parental NPC cells	6/7	15–20
MCH4.5	HONE1 × MCH903.1	3/6	35
MCH4.6	HONE1 × MCH903.1	2/6	40–45
MCH4.8	HONE1 × MCH903.1	1/6	40–45
MCH8.4	HONE1 × MCH906.15	0/6	—
MCH8.8	HONE1 × MCH906.15	3/6	40–55
MCH8.12	HONE1 × MCH906.15	1/6	60
MCH12.1	HONE1 × MCH910.7	0/6	—
MCH12.7	HONE1 × MCH910.7	0/6	—
MCH12.10	HONE1 × MCH910.7	3/6	50–100
MCH11.3	HONE1 × MCH939.2	6/6	25–35
MCH11.8	HONE1 × MCH939.2	6/6	30–35
MCH5.1	HONE1 × MCH924.4	6/6	15–20
MCH5.2	HONE1 × MCH924.4	6/6	20–25
MCH5.5	HONE1 × MCH924.4	6/6	25