Characterization of Glo fish and GloFli fish. (A) Identification of fluorescent thrombocytes in Glo fish. From left to right are images of blood cells in a smear under red fluorescence, cells under bright field, and hematoxylin and eosin–stained cells obtained from Glo fish. Arrows show RFP⁺ thrombocytes. (B) Identification of GFP⁺ thrombocytes in Fli fish. From left to right are images of blood cells in a smear from Fli fish under bright field and green fluorescence. Arrows show GFP⁺ thrombocytes. (C) Identification of DP and DN thrombocytes in GloFli fish. From left to right are images of a blood smear from GloFli fish showing DP and DN thrombocytes, under bright field, red fluorescence, and green fluorescence. Arrows show DP (GFP⁺/RFP⁺) and DN thrombocytes (GFP⁺/RFP⁻).