So it does—of strength and the healthy mucoid secretion of the intestine, without which natural functions cannot be properly performed.

Catarrhal conjunctivitis, which is characterized by an increased mucoid secretion accompanying the hyperaemia, is usually bilateral and may be either acute or chronic.

“Most people were expecting us to say that all the strains were mucoid, but we found that’s only a proportion of strains,” Whiteley says.