31. Dementia lacking distinctive histology ( DLDH ) is a rare and controversial entity. 32. Cystic hygroma is indistinguishable from cavernous lymphangiomas on histology . 33. Heidenhain is remembered for his work in comparative anatomy, embryology and histology . 34. In 1923 Landau founded the department of histology and embryology at Kaunas University. 35. HPS is similar to H & E, the standard bearer in histology . 36. He also conducted studies on the ecology, morphology and histology of lianas. 37. Thus, sperm detection with FNA showed wide variation depending on testis histology . 38. Light microscopic histology of the retinal pigment epitelium of autosomal albino retinal melanocytes. 39. In February 1903, he attained a full professorship of histology and embryology. 40. Her research areas included histology , cytology and embryology.