https://www.selleckchem.com/products/lithocholic-acid.html We also describe an unprecedented runaway evolution of telomeric repeats in nuclei of ascomycetous yeasts accompanied by co-evolution of telomere-associated proteins. We propose several scenarios derived from research on telomeres and supported by other studies from various fields of biology, while emphasizing that the relevant answers are still not in sight. It is this uncertainty and a lack of a detailed roadmap that makes the journey through the jungle of biological systems still exciting and worth undertaking.PURPOSE Internet use is common among people with suicidal feelings and a considerable amount of suicide help material is available online. Despite attempts to promote formal help sites (e.g. governmental and charity sector) in internet search results, users' evaluation of these sites is lacking. This study, therefore, aimed to explore distressed users' perceptions of formal online help and their experiences of using this in times of crisis. METHODS In-depth interview study of 53 adults reporting suicide-related internet use. RESULTS While highly valued in relation to general mental health problems, formal sites were not perceived to meet the different needs of those experiencing suicidal thoughts, and did not engage individuals in crisis. Sites were criticised for being impersonal, dispassionate, too focused on information-giving, and lacking solutions that were novel or sensitive to reasons why an individual may choose to seek help online. Most participants criticised the tendency for sites to signpost to offline services as their primary response. Participants desired immediacy and responsive online help incorporating 'live chat', self-help tools, opportunities to interact with others and lived-experience content. Positive accounts of seeking online help described sites incorporating these features. CONCLUSIONS Formal online help services should be reappraised to ensure they meet users' needs for