Bone structures in avian and mammalian lungs

Ectopic bone was found in the interstitium of lungs of birds, guinea pigs and minks. There was no evidence of a relation between the ectopic bone and the occurrence of disease.     

Influence of environment on passive immunity in calves

Passive immunity in neonatal calves is influenced by environment. Placing newly born Holstein calves (108 head) in three different housing environments (shade, cooled shade, hutch) during hot weather produced differences in body temperature, serum cortocosteroids, immunoglobulin IgG1 concentrations, and mortality. Experimental design permitted examination of effects due to treatments, time, differences in colostrum, and climatic environment in an analysis of variance. Calves exposed to the hotter, less desirable environment responded by having a higher mortality, higher serum corticosteroid concentration, and lower serum immunoglobulin IgG1 at 2 and 10 days after birth. All of these were correlated. Calves that died had serum immunoglobulin IgG1 falling below the mean for all experimental calves.     

Cervical cancer and cytology screening in New Zealand

Cytology screening, used in New Zealand since 1955 at an intensity comparable to that in Canada generally, has not favourably affected incidence and mortality rates for cervical cancer; these have actually risen significantly in 20 to 34-year-old New Zealand women. Canadian claims that mortality falls are related to intensity of cytological screening are not justifiable, so that the significance of the 'pre-cancers' revealed by cytology and the value of population screening would seem to be doubtful.