1. Almeida, P.A., Kulay, L., Camano, L.: Histochemical study of the monoamine oxidase (MAO) in the placenta of rats (Pattus norvegicus albinus, Rodentia mammalia) which were submitted to acute stress on the 15th and 18th days of pregnancy. Ann. Histochem. 16, 265?272 (1971)
2. Altman, F.P.: The use of a recording microdensitometer for the quantitative measurement of enzyme activities inside tissue sections. Histochemie 27, 125?136 (1971)
3. Arioka J., Tanimucai, H.: Histochemical studies on MAO in the midbrain of the mouse. J. Neurochem. 1, 311?314 (1957)
4. Bjorklund, A., Falck, B., Owman, Ch.: Fluorescence microscopic and microspectrofluorometric techniques for the cellular localization and characterization of biogenic amines. In: Methods of investigative and diagnostic endocrinology, Vol. 1. pp. 318?368 (S.A. Berson, ed.), Amsterdam: 1972
5. Blackstad, T., Fuxe, K., Hokfelt, T.: Noradrenaline nerve terminals in the hippocampal region of the rat and guinea pig. Z. Zellforsch. 78, 463?473 (1967)