Scoring categories used for assessing the number of silica-laden macrophages (SLMs) within badger tissues. Janne M. Schoening Leigh A. L. Corner Locksley L. McV. Messam Joseph P. Cassidy Alan Wolfe 10.1371/journal.pone.0190230.g001 https://plos.figshare.com/articles/figure/Scoring_categories_used_for_assessing_the_number_of_silica-laden_macrophages_SLMs_within_badger_tissues_/5795517 <p>Under polarized light, SLMs contrast brightly against the darker background tissue. For a higher magnification view of SLMs, see also Figs <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0190230#pone.0190230.g002" target="_blank">2</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0190230#pone.0190230.g003" target="_blank">3</a>.</p> 2018-01-17 18:28:26 siliceous dust inhalation European badger mineral dust retention silica-laden macrophages Environmental dust inhalation Mycobacterium bovis infection status Chronic inhalation mineral dust particles 60 wild-caught badgers risk factor retrospective histological study extrathoracic lymph nodes SLM bovis infection status