Methods A total of 196 patients with agranulocytosis were analyzed retrospectively. These patients were divided into four groups according to WBC count in peripheral blood:(0～0.499)×10~9/L,(0.5～0.999)×10~9/L,(1.0～1.499)×10~9/L and(1.5～1.999)×10~9/L.
The mice bearing U14 tumor under the skin of right back were randomly divided into 4 groups: ① (D-E-,) ② (D+E-,) ③ (D-E+,) ④ (D+E+,) D represented CTX, E represented alternating current, + and - represented something and nothing.
Methods 108 cases of patients with chronic schistosomiasis determined by Kato- Katz method were divided into 4 groups and given 5mg/kg、10mg/kg、20mg/kg body weight praziquantel and placebo respectively.
Methods 24 SD rats were divided randomly into 4 groups. Three groups of rats were status epilepticus(SE)-induced and differed in seizure-lasting time as follow respectively SE<10 min,SE 10-30 min and SE>30 min.
Methods: Forty rabbits were randomly allocated into 4 groups,each group had 10 rabbits to inhale 55%～60%nitrous oxide ( N, group N),0.8%～1.0%halothane (F, group F) and 0.8%～1.0%isoflurane (I, group I) for 4 h respectively and the last group was the control group (C) to inhale nothing.
Methods Orthodontic tooth movement of upper first molar was performed in 32 rats with coil spring for 21 days. Thirty-two rats were randomly allocated into 4 groups: Three simvastatin groups( 2.5mg/kg, 5.0mg/kg and 10.0mg/kg) and the control group.
Methods 21 open chest anesthetized dogs that had been subjected to 15 min left anterior descending coronary artery occlusion and 30 min reperfusion to produce regional myocardial stunning were allocated into 4 groups:control group (Ⅰ),epinephrine group (Ⅱ),milrinone group (Ⅲ),and milrinone+epinephrine group (Ⅳ).
Methods:Adult ovariectomized rats were used in this study as the model of postmenopausal osteoporosis. 40 three-month-old of female SD rats were randomly allocated into 4 groups:control group,ovariectomized group(OVX),Nilestriol group and Livial group.
The genotypes can be divided into four groups according to the acetylator phenotype: groups with rapid (R/R), intermediate (R/S), or slow (S/S) acetylation and a group combining intermediate and slow alleles ("R/S or S/S").
Relations between the energy of protonation of 395 organic compounds divided into four groups and their molecular volume were drawn.
The crystals studied were divided into four groups: (i) crystals 0.1-0.9 μm in diameter, (ii) twinned crystals 1-2 μm in diameter, (iii) needle-like crystals from 5 to 1500 μm in diameter, and (iv) isometric crystals (the latter were not measured).
boydii serotype representatives were divided into four groups, in which serotype C13 strain was remarkably distinguished from the other serotype strains.
Under this goal, the first tier contains four evaluation aspects, and the second tier contains sixteen evaluation criteria divided into four groups.
The structures of binary Ln-X chalcogenides can be divided into 4 groups: derivatives of NaCl-type structures, structures with one small parameter b≈ 4 ?, structures similar to those of oxides and pniktides, and derivatives of PbFCl-type structures.
These RS were divided into 4 groups by clustering analysis and mapped onto chromosomes 1, 3, 4, 7, 8, 9, 10 and 11, respectively, by genetic mapping.
Methods: Thirty-two adult male rabbits were randomly divided into 4 groups.
Materials and methods: Weaning male Wistar rats were randomly divided into 4 groups according to the dietary Mg and Ca as follows: Mg-adequate Ca-adequate (control), Mg-adequate Ca-deficient, Mg-deficient Ca-adequate, Mg-deficient Ca-deficient.
The patients were divided into 4 groups (small-PD/non-restrictive, n = 124; small-PD/restrictive, n = 29; large-PD/non-restrictive, n = 50; large-PD/restrictive, n = 23).