REVISION OF THE MICROSARAEA SPECIES FROM THE MONTI D'OCRE AREA (SCLERACTINIA; EARLY CRETACEOUS)
Two coral species from the Early Aptian of the Monti d'Ocre area (Abruzzi) originally assigned to the genus Microsaraea Koby, 1889 are revised on the basis of their type material. Both are assigned to the genus Polyphylloseris . They are considered synonymous. The senior synonym, Microsaraea distefanoi Prever, 1909, was formerly assigned to the genus Microsolena and has a wide geographical and stratigraphical distribution. Since Microsaraea distefanoi Prever belongs to a different genus, the citations in the literature of this species are critically reviewed and, where possible, assigned to the proper Microsolena species.
In the course of studying the susceptibility of mice to Salmonella infection, we discovered that C3H/HeJ mice differ from other strains in both their susceptibility to infection and their response to prior vaccination. Others have noted the absence of the usual B cell stimulation by LPS in these mice. To investigate the status of delayed hypersensitivity in C3H/HeJ mice, we tried to use the technique of macrophage migration. Under conditions of normal migration for other strains, C3H/HeJ peritoneal and splenic macrophages failed to migrate, thus establishing another differentiating immunological trait for this strain.