Bibliografisk träff 1955-03-01 Studies in the biochemistry of micro-organisms. 94. The colouring matters of species in the Aspergillus nidulans group. I. Asperthecin, a crystalline colouring matter of Aspergillus quadrilineatus Thom & Raper. HOWARD BH, RAISTRICK H. Biochem J · research-article; journal article · DOI 10.1042/bj0590475