Labels:text | screenshot | black and white | black | font | document OCR: Other immunoreactive peptides that are tostatin, occasionally demonstrable include some known as gastrin-releasing peptide (or its fragmen ne (ACTH), bombesin), adrenocorticotrophic hormo During the and corticotrophin-releasing hormone. he past decade, case reports have indicated ary existence of mixed follicular and medull carcinomas: in one instance, positive immunostaining occurred with both he same antithyroglobulin and anticalcitonin in mixed tumour cells. The identification of these lar thyroid tumours has suggested that some follicu te into a cells may have the capacity to differentia ome cells ofC-cell phenotype or, alternatively, that s to express ultimobranchial origin may differentiate a follicular phenotype.