Intergenerational solidarity.

Family is that thread which links multiple generations together through a system of shared beliefs, norms, values and cultural traditions. Intergenerational ties fulfil many functions within a family. Besides transmission of appropriate information regarding behaviour, life styles, and values, these ties help reduce marginalization between different generations, and are a source of support and identity for each individual. The knowledge of ageing and the development of positive attitudes towards old age contribute to the improvement of intergenerational relations, combat stereotypes that promote ageism and develop a more realistic outlook towards one's own ageing process.

Strategies for purification of four reproductive hormones from the same batch of buffalo (Bubalus bubalis) pituitaries.

The occurrence of different reproductive hormones like LH, FSH, TSH and prolactin, in different side fractions obtained during the extraction of buffalo pituitary glands either by the procedure of Papkoff et al. [Arch Biochem Biophys, 111 (1965) 431] or by that of Ellis [Endocrinology, 69 (1961) 554], was examined with the aid of antisera to respective heterologous hormones as well as bio-assays. Thus in the procedure of Papkoff et al., the SP-Sephadex fractions could be taken for purification of LH and TSH, while the acid pellet yielded prolactin. Further it was shown that 50% (NH4)2SO4 could be directly size fractionated and following cation exchange chromatography yields LH and TSH. FSH could be purified from 80% ammonium sulphate pellet. In another protocol of Ellis, differential extraction and chromatographic separation yielded all the four reproductive hormones. Some of the physico-chemical and immunobiological characteristics of these hormones are described.