Many laboratory studies have documented that mercury can be toxic to fish, but it is largely unknown if mercury is toxic to fish in their natural environments. The objective of our study was to investigate the toxic effects of mercury on northern pike (Esox lucius) at Isle Royale, Michigan. In 124 northern pike from eight inland lakes, concentrations of total mercury in skin-on fillets ranged f...

The morphological characteristics of the cells of lymphoreticular tumors in the northern pike (Esox lucius L.) are described. The study was based on light microscopy of sections and imprints subjected to selected staining and histochemical procedures and on electron microscopy of thin sections. Neoplastic cells from tumors in different individuals as well as within a given tumor were remarkably...

The morphological characteristics of the cells of lymphoreticular tumors in the northern pike (Esox lucius L.) are described. The study was based on light microscopy of sections and imprints subjected to selected staining and histochemical procedures and on electron microscopy of thin sections. Neoplastic cells from tumors in different individuals as well as within a given tumor were remarkably...

How we represent animals both reflects our attitudes towards them and affects our treatment of them. The donkey has lived alongside humans, bearing their burdens since the time of their domestication over 10,000 years ago. Despite this, they have invariably enjoyed a low status in human cultures, received little appreciation and been treated harshly. We view some animals as being more worthy th...

organochlorine compounds such as, polychlorinated biphenyls and organochlorine pesticides are among the best known classes of contaminants because of their potential for magnification and harmful biological effects. in this study, the amounts of organochlorine pesticides including d.d.t and its metabolites, α, β and γ-hchs isomers, σcyclodiene (endosulfan, heptachlor, heotachlor epoxide, aldrin...

With a prompt that has been written about countless times, this essay argues the fall of Roman Republic was inevitable by examining end republic through new lens- political instability. This paper draws on primary sources and key individuals such as Julius Caesar lesser-known Gracchi brothers. The title does not lie – Rome is filled with exciting twists turns are examined within work. focused t...