On improved volatility modelling by fitting skewness in ARCH models.

We study ARCH/GARCH effects under possible deviation from normality. Since skewness is the principal cause for deviations from normality in many practical applications, e.g.

Expression of V-SRC and chromosome analysis of a newly established cell line from rat sarcoma induced by an avian retroviral strain.

In the newly established rat sarcoma cell line LSR-SF (SR) expression of pp60v-src was detected. Karyotype analyses revealed various chromosome aberrations during prolonged passaging of the tumor cells in vitro. Polyploidy was found to be a characteristic feature of the line studied.