 human tumor-egg host system iii tumor-inhibitori properti tenuazon acid ferment broth cultur alternaria tenui auct inhibit growth human adenocarcinoma ad 1 embryon egg aid studi egg-tumor system activ agent isol identifi tenuazon acid tenuazon acid produc number alternaria isol aspergillustamarii phoma sp compar tenuazon acid molar basi 20 time hadacidin 6-mercaptopurin 2 time azaserin 1 20 triethylenemelamin tem requir achiev inhibit ad 1 tumor growth egg tenuazon acid effect ad 1 transplant human tumor a-42 tenuazon acid compar puromycin inhibit tumor growth egg-tumor system 