
ALT Figure 1. Distribution of the nine non-native land planarian species recorded in Belgium through 31 December 2025. Part of: Van den Neucker T, Soors J, Jacobs A, Reniers J, Delva S, Kmentová N, Vanhove MPM, D’hondt B, Scheers K, Bronne L, Ewers C, Abraham L, Groom Q, Halfmaerten D, Neyrinck S, Breugelmans K, Backeljau T, Justine J-L, Gastineau R, Winsor L, Adriaens T (2026) Non-native land planarians (Platyhelminthes, Tricladida, Geoplanidae) in Belgium: A review and risk assessment. NeoBiota 108: 305-334. https://doi.org/10.3897/neobiota.108.190976

ALT Emergence and divergence of blood cells. The origin of blood cells is traced back approximately 700 million years to when human ancestors were single-celled organisms. When these ancestors evolved into multicellular organisms (animals), macrophages emerged as the first blood cells. Over the course of subsequent evolution, various blood cells, such as mast cells, diversified. Credit: Yosuke Nagahata.



























