| The origin of symptoms on the brain-gut axis in functional dyspepsia | Gastroenterology | 1991 | 405 |
| The early acquisition of two-way (shuttle-box) avoidance as an anxiety-mediated behavior: psychopharmacological validation | Brain Research Bulletin | 1991 | 112 |
| Leukocyte infiltration and glial reactions in xenografts of mouse brain tissue undergoing rejection in the adult rat brain. A light and electron microscopical immunocytochemical study | Journal of Neuroimmunology | 1991 | 95 |
| Infantile (handling) stimulation and behavior in young Roman high- and low-avoidance rats | Physiology and Behavior | 1991 | 64 |
| Gastrointestinal motor disturbances in functional dyspepsia | Scandinavian Journal of Gastroenterology | 1991 | 62 |
| Sensorial and intestinointestinal reflex pathways in the human jejunum | Gastroenterology | 1991 | 48 |
| Canine leishmaniasis associated with systemic vasculitis in two dogs | Journal of Comparative Pathology | 1991 | 47 |
| Developmental profiles of polyunsaturated fatty acids in the brain of normal infants and patients with peroxisomal diseases: severe deficiency of docosahexaenoic acid in Zellweger's and pseudo-Zellweger's syndromes | World Review of Nutrition and Dietetics | 1991 | 40 |
| Stress and putative endogenous ligands for benzodiazepine receptors: the importance of characteristics of the aversive situation and of differential emotionality in experimental animals | Experientia | 1991 | 38 |
| Effects of different handling-stimulation procedures and benzodiazepines on two-way active avoidance acquisition in rats | Pharmacological Research | 1991 | 36 |
| Origin of the radial artery from the axillary artery and associated hand vascular anomalies | Journal of Hand Surgery | 1991 | 34 |
| Cocaine abuse among heroin addicts in Spain | Drug and Alcohol Dependence | 1991 | 32 |
| Influence of intermediate-density lipoproteins on the accuracy of the Friedewald formula | Clinical Chemistry | 1991 | 32 |
| Male pseudohermaphroditism due to Leydig cell agenesia and absence of testicular LH receptors | Clinical Endocrinology | 1991 | 28 |
| Identification and distribution of microglial cells in the cerebral cortex of the lizard: a histochemical study | Journal of Comparative Neurology | 1991 | 28 |
| Beneficial effects of infantile stimulation on coping (avoidance) behavior in rats are prevented by perinatal blockade of benzodiazepine receptors with Ro 15-1788 | Neuroscience Letters | 1991 | 27 |
| The role of radiation therapy in inverted papilloma of the nasal cavity and paranasal sinuses | International Journal of Radiation Oncology Biology Physics | 1991 | 26 |
| Diagnostic value of ascites gamma interferon levels in tuberculous peritonitis. Comparison with adenosine deaminase activity | Tubercle | 1991 | 26 |
| Ontogenesis of insulin receptors in human cerebral cortex | Journal of Endocrinological Investigation | 1991 | 26 |
| Acid aspiration prophylaxis in morbidly obese patients: famotidine vs. ranitidine | Anaesthesia | 1991 | 21 |
| Reflex changes in intestinal tone: relationship to perception | American Journal of Physiology - Renal Physiology | 1991 | 21 |
| Ureteral obstruction and ureteral fistulas after aortofemoral or aortoiliac bypass surgery | Journal of Urology | 1991 | 21 |
| Distribution of a novel mycolic acid in species of the genus Mycobacterium | International Journal of Systematic Bacteriology | 1991 | 20 |
| Activation by vanadate of glycolysis in hepatocytes from diabetic rats | Diabetes | 1991 | 20 |
| Atypical polypoid dermatofibroma: report of two cases | Journal of the American Academy of Dermatology | 1991 | 20 |
