Hoping

Jacques van Rooyen. (Gallo Images) Former Lions prop Jacques van Rooyen is set for a trial at the Bulls this coming week as the franchise explores some depth in the loosehead position.The 33-year-old, nicknamed "Policeman" for his involvement at Pretoria Police rugby club, could prove a useful and experienced backup to Springbok Lizo Gqoboka, who…

Cell.Scientists have long turned to llamas for antibody research. In the last decade, for example, scientists have used llamas’ antibodies in H.I.V. and influenza research, finding promising therapies for both viruses.Humans produce only one kind of antibody, made of two types of protein chains — heavy and light — that together form a Y shape.…