Theodor Seuss Geisel, better known by his pen name, Dr. Seuss, graduated Dartmouth College in 1925, then pursued a Doctor of Philosophy (in the US, PhD) in English Literature from Lincoln College, Oxford University. He married in 1927 and returned to the United States without completing his studies.
Penicillium species are one of the most common causes of fungal spoilage in fruits and vegetables. Penicillium italicum and Penicillium digitatum are the most common attackers of citrus fruits, while Penicillium expansum is known to attack apples. P. digitatum works by producing ethylene to accelerate ripening.
Penicillium species as a health hazard. Many species of Penicillium are common contaminants on various organic materials and are recognized potential mycotoxin producers. The most well known toxin producing species in foods include P. citreonigrum, P. citrinum, P. crustosum, P. islandicum and P. verrucosum.