Keratin 



bodies in down-sheath cells, 176, 180 



process of keratinization, 179 

 Kindred (1940), 8, 114 

 Kingfisher 



eosinophil, 207 



heterophil, 207 

 Kinglet, golden-crowned [Regulus siilrapa), 202 

 Kirschbaum and Downey (1937), 4. 8 

 Kitaeva (1939), 211, 218 

 Kniselyetal. (1947), 31 

 Knowlesetal. (1929), 41 

 Kracke and Garver ( 1937 ) , 8, 72, 93 

 Kyes (1915), 139 

 (1929), 39, 73 



Laboratory 



erythrocyte, 17, 23 

 quarantine, 179 

 smudged cells, 72 

 See also Chicken, source 

 Larus ridibundus. See Gull 

 Leishman's stain. 5ee Stain and staining 

 Leptochromatic. See Nucleus 

 Lesbouyries (1941), 86 

 Leukemia 



cell modified in, 113 

 in fowl 



lymphocyte, large, 50 

 smudged nucleus, not diagnostic, 72 

 in mammal 



lymphocyte series from lymphoblastic leukemia, 



53 

 man, toxic granule, 87 

 mouse, smudged cell, 39 

 resemble immature cells, 112 

 simulation of, 141 



See also Avian leukosis complex; Lymphomatosis 

 Leukocyte (s) 

 count (s) 



chicken, 216, 219 

 methods for, 232-234 

 sex, 216, 218 

 variability, 217 

 granular, 10, 73-92, 193-197, 207 

 in huffy coat, 232 

 nongranular, 10, 47-73 

 origin, extravascular, 141 

 spherical bodies, 33 

 types in avian blood, 47, 73, 86, 88 

 See also specific leukocytes 

 Light 



infrared, 226 



drying slides with, 227 

 microscope, 222-225 

 tungsten arc, 222 

 Liver 



effect of splenectomy, 29 

 macrophage from, 139 

 Loewenthal (1930), 86 



Lucas 1 1940). 4, 30 



(1946),64, 87, 134 



(1949), 64, 181 



(1950), 181 



(1951), 181 



and Breitmaver (1949), 181 



Craig, and Oakberg (1949), 64, 181 



and Denington (unpublished data), 215, 21c 



and Denington ( 1956) , 48, 195 



and Herrmann ( 1935) , 4 



and Oakberg (1950), 64, 181 



and Riser (1945), 4 



-etal. (1954),64, 156, 181 



Lundquist and Hedlung (1925), 83. 88, 90 

 Lymphoblast(s), 9, 10, 12, 164 

 nucleolus 



absent, 169 



lost, 168 

 thymus, 54, 170, 172, 174 



rare in older gland, 167 



transition from mesenchyme, 168 

 Lymphocvte(s), 9. 10, 12, 18, 45, 47, 48, 50, 62, 146. 



165, 216 

 abnormal, 54, 56, 64-65 



chromophobic areas, 56 



hypertrophy and vacuolization, 64 



magenta bodies, 54, 64 

 age, 53-54 



area, 66, 212, 213, 214 

 chicken 



different breeds and stocks, 62, 212, 213 



similar to other avian species, 210 

 count (s) 



birds, wild, 219 



chicken. 216 



duck. 216, 219 



goose, Canada, 216 



pheasant, ring-necked, 217 



pigeon, 219 



Laboratory, 217 



sex, 216 218 



turkey, 219 

 cytoplasm 



blebs, 31. 50,51,54, 80. 1.55 

 antibodv formation, 50 



hyaline, 50, 51, 54 



hypertrophy, 56 



magenta bodies, 54 



compared with azurojjhilic bodies, 54 



structure, 49, 52, 71 

 development. 174 



to macrophage, questionable, 64, 134 



to monocyte, questionable, 47, 48 



See also Lyniphocytogenesis 

 developmental stages, 10 



in bone marrow, 199, 200 



in circulating blood, 53-54 



in spleen, 165, 166 



in thymus, 168, 169, 172 

 effect of — 



fixation, 80 



splenectomy, 29 



258 



